CN210120560U - Testing device of optical line terminal - Google Patents
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- CN210120560U CN210120560U CN201921247891.5U CN201921247891U CN210120560U CN 210120560 U CN210120560 U CN 210120560U CN 201921247891 U CN201921247891 U CN 201921247891U CN 210120560 U CN210120560 U CN 210120560U
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Abstract
The utility model discloses a testing device of an optical line terminal, which comprises an error code detector, a time sequence control panel, N optical network units and an optical attenuator, wherein the error code detector outputs continuous data of a specific code pattern; the time sequence control board is provided with a signal configuration end group, and outputs N paths of enabling signals through the configuration of the signal configuration end group; n optical network units generate N paths of burst lights according to the continuous data of the specific code pattern and N paths of enabling signals; the optical attenuator is connected with an optical line terminal to be tested; the optical attenuator attenuates the N paths of burst lights and transmits the N paths of burst lights to the optical line terminals so that the N optical line terminals execute optical detection work and feed back level signals representing detection results to the time sequence control board after the optical line terminals work; and the time sequence control board receives the level signals representing the detection results fed back after the N optical line terminals execute the optical detection work so as to judge whether the N optical line terminals normally execute the optical detection work. The utility model discloses optical line terminal's test cost has been reduced.
Description
Technical Field
The utility model relates to a product test field especially relates to a testing arrangement for light line terminal.
Background
When a PON (Passive Optical Network) series product OLT (OLT: Optical line terminal) is tested, a burst error detector needs to be used to perform a burst performance test on a product to be tested. In the exemplary technique shown in fig. 1, the burst error detector configures a burst signal BurstData at a desired timing, provides an enable signal BEN to an ONU (Optical Network Unit), and configures a reset signal RST and an Optical reception intensity reporting trigger signal RSSI _ Trig to be provided to an OLT Optical line terminal to be tested. The ONU optical network unit generates a path of burst-like light with a specific code pattern under the coordination of the BEN enabling signal, sends burst data to the optical attenuator, and can reduce/increase the optical power input to the OLT optical line terminal by adjusting the optical attenuator. Then, whether the SD (Signal detect) Signal or the LOS (LOSs of Signal) Signal is normally alarmed/disarmed is observed on an oscilloscope.
Compared with a conventional error code meter, the burst error code meter can directly generate burst light signals for testing, and can realize functions which cannot be realized by the conventional error code meter, and also has other functions, so that the burst error code meter is high in price per se, needs assistance of an oscilloscope, and is high in cost when applied to batch test of a production line.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an optical line terminal's testing arrangement aims at reducing optical line terminal's test cost.
In order to achieve the above object, the utility model provides an optical line terminal's testing arrangement for test a N optical line terminal, N is greater than or equal to 1, optical line terminal's testing arrangement includes:
the error code instrument is used for outputting continuous data of a specific code pattern;
the time sequence control board is provided with at least one signal configuration end group, and the time sequence control board can configure and output N paths of enabling signals through the signal configuration end group;
the N optical network units are respectively in communication connection with the error code instrument and are electrically connected with the signal configuration end group of the time sequence control board; the N optical network units are used for receiving the continuous data of the specific code pattern and the N paths of enabling signals and generating N paths of burst lights according to the continuous data of the specific code pattern and the N paths of enabling signals;
the input end of the optical attenuator is connected with the output end optical fibers of the N optical network units, and the output end of the optical attenuator is a test interface for connecting an optical line terminal; the optical attenuator is configured to receive N paths of the burst-like light, attenuate the N paths of the burst-like light, and transmit the N paths of the burst-like light to the optical line terminal, so that the N optical line terminals perform light presence detection work, and feed back a first level signal representing a detection result to the timing control board after performing the light presence detection work;
the time sequence control board is also provided with N detection end groups, the N detection end groups are connected with the N optical line terminals, the time sequence control board receives first level signals representing detection results fed back after the N optical line terminals execute the optical detection work through the N detection end groups, and judges whether the N optical line terminals normally execute the optical detection work according to the first level signals.
In an embodiment, the timing control board may configure, through the signal configuration end group, to output N optical reception intensity reporting trigger signals to the N optical line terminals to trigger the N optical line terminals to perform optical signal loss detection work, where the N optical line terminals feed back a second level signal representing a detection result to the timing control board after performing the optical signal loss detection work;
and the time sequence control board receives second level signals representing detection results fed back after the N optical line terminals execute the optical signal loss detection work through the N detection end groups, and judges whether the N optical line terminals normally execute the optical signal loss detection work according to the second level signals.
In an embodiment, when M of the N optical line terminals are GPON types, the signal configuration end group may be configured to output M reset signals to the M optical line terminals of the GPON types, so as to trigger the M optical line terminals of the GPON types to reset after the timing control board determines whether the M optical line terminals of the GPON types normally perform optical detection according to the first level signal, where M is greater than or equal to 1 and less than N.
In one embodiment, the timing control board further has N detection terminal sets,
the time sequence control board receives first level signals or second level signals fed back by the N optical line terminals through the N detection end groups;
the time sequence control board receives N-base quasi-reference signals configured by external equipment or N-base quasi-reference signals configured by the time sequence control board through N detection end groups;
the time sequence control board compares the received N first level signals with the reference signals of the corresponding paths to judge whether the N optical line terminals normally execute optical detection work or not;
and the time sequence control board compares the received second level signal with the reference signal of the corresponding path to judge whether the optical line terminal of the corresponding path normally executes the optical signal loss detection work.
In an embodiment, the timing control board outputs N-level quasi-reference signals to the detection terminal group through the signal configuration terminal group.
In one embodiment, the signal configuration end groups are 4 groups, each signal configuration end group is provided with 4 output ports,
the 4 output ports of each signal configuration end group can be configured to output at least one path of the enabling signal, one path of the reset signal and one path of the light receiving intensity reporting trigger signal at will.
In one embodiment, any output port of the 4 output ports of each signal configuration end group can be further configured to output the reference signal;
the detection end group is provided with 2 input ports, wherein 1 input port is configured to be input by the first level signal or the second level signal, and the other input port is configured to be input by the reference signal.
In an embodiment, if the optical line terminal is a GPON type, one of the 4 paths is configured to be a reset signal and output the reset signal to the optical line terminal.
In one embodiment, the timing control board includes a control register for controlling the simultaneous transmission of a plurality of signals of the same signal configuration terminal group.
In one embodiment, the continuous data of the particular code pattern is a pseudorandom code.
The technical scheme of the utility model replaces the traditional burst error code meter to realize the test of the optical line terminal by the test device of the optical line terminal consisting of the error code meter, the time sequence control panel, N optical network units and the optical attenuator to reduce the test cost, and the time sequence control panel can be configured to output one or more enabling signals, each optical network unit can receive one enabling signal and continuous data of a specific code type to generate 1 path of burst light and output the 1 path of burst light to the optical line terminal after being adjusted by the optical attenuator to ensure that the 1 path of optical line terminal executes the optical detection work, the optical line terminal reports the signal to the time sequence control panel for warning after the detection, thus the observation by an oscilloscope is not needed, the test cost is reduced, and when the enabling signals are multiple paths, the optical network units are correspondingly set to be multiple paths to generate multiple paths of burst light to realize the test of the multiple paths of, so, just make the utility model discloses the testing arrangement at the circuit terminal of light can also realize testing a plurality of optical line terminals, can be in order to realize the test of mass nature, greatly reduced cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of a circuit function module of an exemplary technique of a test apparatus of an optical line terminal;
fig. 2 is a schematic diagram of a circuit function module according to an embodiment of the testing apparatus for an optical line terminal of the present invention;
fig. 3 is a schematic diagram of a circuit function module of another embodiment of a testing apparatus for an optical line terminal.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model aims at providing an optical line terminal's testing arrangement for test a N optical line terminal, N is greater than or equal to 1, shows to test one or more optical line terminal simultaneously, aims at reducing the problem that adopts proruption error code appearance to produce the batched test demand of line.
Referring to fig. 2 and 3, the utility model provides a testing device of optical line terminal 400 includes:
an error code detector 100 for outputting continuous data of a specific code pattern;
the timing control board 500 is provided with at least one signal configuration end group, and the timing control board 500 can configure and output N-path enable signals BEN through the signal configuration end group;
n optical network units 200, which are respectively in communication connection with the error code detector 100 and are electrically connected with the signal configuration end group of the timing control board 500; n optical network units 200, configured to receive the continuous data of the specific code pattern and N channels of the enable signals BEN, and generate N channels of burst-like light according to the continuous data of the specific code pattern and the N channels of the enable signals BEN; that is, each onu 200 is configured to receive the continuous data of the specific code pattern and 1 channel of the enable signal BEN, and generate 1 channel of burst-like light according to the continuous data of the specific code pattern and 1 channel of the enable signal BEN, and how many channels of burst-like light are generated for N;
an input end of the optical attenuator 300 is connected to output ends of the N optical network units 200 through optical fibers, and an output end of the optical attenuator 300 is a test interface to which an optical line terminal 400 is connected; the optical attenuator 300 is configured to receive N paths of the burst-like light, attenuate the N paths of the burst-like light, and transmit the N paths of the burst-like light to the optical line terminal 400, so that the N optical line terminals 400 perform optical detection work, and feed back a level signal representing a detection result to the timing control board 500 after performing the optical detection work; the adjustment of the optical attenuator 300 is automatically controlled by an electronic device or a Personal Computer (PC), and all the devices are connected to the electronic device or the PC for unified control, hereinafter referred to as a host, and the host sends a test command and related signals to control the test flow of the whole test apparatus.
The timing control board 500 further has N detection end groups IN, where the N detection end groups IN are connected to the N optical line terminals 400, and the timing control board 500 receives, through the N detection end groups IN, level signals representing detection results fed back after the N optical line terminals 400 perform optical detection work, and determines whether the N optical line terminals 400 normally perform optical detection work according to the level signals.
In this embodiment, the error detector 100 is a common continuous data error detector 100, the specific code pattern may be a continuous data pseudo random code, a burst signal provided by the burst error detector 100 in the exemplary technology includes a section of 1010 preamble codes + a standard PRBS continuous data code pattern, the preamble codes are used for the establishment of the receiving threshold of the olt 400 and the recovery of the system clock, and the embodiment does not have the preamble codes. The timing control board 500 may be an FPGA (Field-Programmable Gate Array), a CPLD, a general-purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), or other Programmable logic device. The Optical Network Unit 200 is an ONU (Optical Network Unit, Optical Network Unit 200), and the Optical Line Terminal 400 is an OLT (OLT: Optical Line Terminal, Optical Line Terminal 400).
It should be noted that the testing of the optical line terminal 400 mainly includes the optical line terminal 400 detecting light/no light and the optical line terminal 400 detecting whether the optical signal is lost, but only one of them may be tested according to the requirement. When no light is detected, the optical line terminal 400 reports a level signal SD to the timing control board 500. When light is detected, but the optical signal is weak and the intensity is not enough, the LOSs of optical signal detection signal LOS is reported to the timing control board 500.
SD, Signal Detect Signal detection: whether an optical signal is detected or not can be represented by high and low levels, when the power of the optical signal received by the optical line terminal 400 is smaller than a certain threshold value set inside the optical line terminal, no light is determined, low level is output, and an SD signal is reported when no light exists. And when the received optical power is greater than the threshold value, outputting a high level, and releasing the SD alarm.
LOS, LOSs Of Signal: when the power of the optical signal received by the optical line terminal 400 is lower than a certain set threshold Pd (BER corresponding to Pd is greater than or equal to 10-3) within a given time (for example, 10us or longer), the device enters an LOS state, and the optical module reports an LOS signal. And when the threshold value is higher than the threshold value, the LOS alarm is removed.
The host computer controls the test device to execute a light/no light detection test or a test for detecting whether the optical signal is lost.
In an embodiment of the light/no light detection test, the optical attenuator 300 is configured to receive N paths of the burst-like light, attenuate the N paths of the burst-like light, and transmit the N paths of the burst-like light to the optical line terminal 400, so that the N optical line terminals 400 perform light presence/absence detection work, and feed back a first level signal representing a detection result to the timing control board 500 after performing the light presence/absence detection work; the timing control board 500 receives first level signals representing detection results fed back after the N optical line terminals 400 perform the optical presence/absence detection work, and determines whether the N optical line terminals 400 normally perform the optical presence/absence detection work according to the first level signals. In detail, each of the optical line terminals 400 compares the detected optical signal power of the burst-like light with an internal optical signal power threshold, and outputs a low level signal to the timing control board 500 when the optical signal power of the burst-like light detected by each of the optical line terminals 400 is greater than or equal to the internal optical signal power threshold; when the optical signal power of the burst-like light detected by each optical line terminal 400 is smaller than the optical signal power threshold in each optical line terminal, outputting a high level signal to the timing control board 500; when the timing control board 500 receives a low level signal, it determines that the optical line terminal 400 performs normal optical detection; when receiving the high level signal, it is determined whether the optical line terminal 400 performs optical detection.
In an embodiment of detecting whether an optical signal is lost, the timing control board 500 may configure and output N optical reception intensity reporting trigger signals RSSI _ Trig to the N optical line terminals 400 through the signal configuration end group to trigger the N optical line terminals 400 to perform an optical signal loss detection operation, and after performing the signal loss detection operation, the N optical line terminals 400 feed back a second level signal representing a detection result to the timing control board 500; the timing control board 500 receives second level signals representing detection results fed back after the N optical line terminals 400 perform the optical signal loss detection operation, and determines whether the N optical line terminals 400 perform the optical signal loss detection operation normally according to the second level signals. In detail, in this embodiment, it is determined whether the power of the optical signal received by the optical line terminal 400 is lower than a certain set power threshold value within a given time (for example, 10us or longer), if so, it is determined that the optical signal is lost, the signal strength is weak, otherwise, it is normal.
It should be noted that the optical line terminal has a GPON type and a non-GPON type, and the GPON (Gigabit-CapablePON) technology is a broadband passive optical integrated access standard based on the ITU-t g.984.x standard. The above-described test apparatus may be used to test a non-GPON type optical line terminal 400. When M of the N optical line terminals 400 are GPON types, the signal configuration end group may be configured to output M reset signals RST to the M optical line terminals 400 of the GPON types, so as to trigger the M optical line terminals 400 of the GPON types to reset after the timing control board 500 determines whether the M optical line terminals 400 of the GPON types normally perform optical detection according to the first level signal, where M is greater than or equal to 1 and less than N. The test of the GPON type optical line terminal 400 requires a reset operation, and the test of the GPON type optical line terminal 400 can be realized by the embodiment.
In the above embodiment, the timing control board 500 may be configured on the hardware port as follows: the timing control board 500 has one or more signal configuration terminal groups to configure and output one or more (Group1, Group2, Group3, Group4) of the enable signals BEN. Correspondingly, the timing control board 500 further has N detection end groups IN, and the timing control board 500 receives the first level signals or the second level signals fed back by the N optical line terminals 400 through the N detection end groups IN;
when the host receives N optical presence or absence test instructions or optical signal loss test instructions of the optical line terminal 400, the host controls the timing control board 500 to receive N base reference signals IN _ Trig configured by the external device or N base reference signals IN _ Trig configured by the host through the N detection terminal groups IN;
the timing control board 500 compares the N received first level signals with the reference signal IN _ Trig of the corresponding path to determine whether the N optical line terminals 400 normally perform the optical detection operation;
the timing control board 500 compares the received second level signal with the reference signal IN _ Trig of the corresponding path to determine whether the optical line terminal 400 of the corresponding path normally performs an optical signal loss detection operation.
As shown IN fig. 2 and 3, the IN _ Trig is a reference signal, which is a standard signal source having a logic correlation with the BEN enable signal BEN/RST reset signal RST, and can be set by the timing control board 500 or generated by an external device such as the burst error detector 100. IN this embodiment, the received first level signal or second level signal is compared with the reference signal IN _ Trig of the corresponding path, so as to determine whether the detection is normal, and the accuracy of the detection can be improved.
IN one embodiment, the timing control board 500 outputs N-level reference signals IN _ Trig to the detection terminal set IN through the signal configuration terminal set configuration. IN this embodiment, each signal configuration end group may output a reference signal IN _ Trig. The reference signal IN _ Trig is configured by the signal configuration end group and returns to the detection end group IN for logic comparison, no external equipment is needed to provide a reference signal, the detection accuracy is improved, and the equipment cost is further reduced.
In an embodiment, the signal configuration end groups are 4 groups, each of the signal configuration end groups has 4 output ports, and the 4 output ports of each of the signal configuration end groups can be configured to output at least one of the enable signal BEN, one of the reset signal RST and one of the light reception intensity reporting trigger signal RSSI _ Trig at will. That is to say, the timing control board 500 of this embodiment has 16 output ports, and if the timing control board is only used for SD detection, the testing of 16 optical line terminals 400 can be realized at one time, if the timing control board is used for LOS detection, the testing of 12 optical line terminals 400 can be realized at one time, and if the timing control board is used for GPON type, the testing of 2 optical line terminals 400 can be realized, that is, each group can be configured to output 2 paths of the enable signal BEN, 1 path of the reset signal RST, and 1 path of the light reception intensity reporting trigger signal RSSI _ Trig arbitrarily.
Of course, any output port of the 4 output ports of each signal configuration port group may also be configured to output the reference signal IN _ Trig, and when this embodiment is adopted, the configuration of one path of the enable signal BEN may be reduced, and one port is vacated to configure the reference signal IN _ Trig.
Correspondingly, the detection terminal group IN has 2 input ports, wherein 1 input port is configured to be input by the first level signal or the second level signal, and the other input port is configured to be input by the reference signal IN _ Trig.
In an embodiment, referring to fig. 3, the timing control board 500 is implemented by an FPGA, and includes control registers therein, and 4 signal configuration end groups a 1-a 4, B1-B4, C1-C4, and D1-D4 are used, each group has 4 output ports, and each output port in each group can be configured by self-defining in a control register defining a page of 256 bytes in the FPGA according to the requirement of the timing control signal (BEN/RST/RSSI _ Trig). The control register controls a plurality of signals of the same signal configuration end group to be sent simultaneously, so that the analysis and comparison of the signals are ensured to be carried out in the same period.
Specifically, the timing control board 500 is configured with 4 sets of 16 output ports, each set of output ports outputting 4 sets of reference signal IN _ TrigIN _ Trig signals, and is configured with 4 sets of input signals IN1 to IN 4; it should be noted that the timing control board 500 further configures a RSSI _ Trig signal and a RST signal to the optical line terminal 400, where the RSSI _ Trig signal is not necessarily provided during the SD signal test, and the RSSI _ Trig signal is provided during the LOS signal test. In the testing apparatus of the olt 400, all the other ports may be configured as BEN signals, and if not needed, the testing apparatus may be idle, and may be connected to at most 16 onus 200 to operate, and control the 16 onus 200 to emit light to test the olt 400.
Referring to fig. 3, the timing control board 500 is connected to a plurality of optical network units 200 through the IN _ Trig signal, and the optical network units shown IN this embodiment are 4 groups, which are respectively an optical network unit 1, an ONU optical network unit 2, an optical network unit 3, and an optical network unit 4; the ONU optical network units 1 to 4 are connected to an optical attenuator 300, and generate burst-like light based on N specific code patterns under the action of an N-way enable signal BEN signal, the illustrated optical attenuator 300 is connected to an optical line terminal 400, receives burst-like light, and adjusts the optical power of the optical line terminal 400 connected to the optical attenuator 300, and the optical attenuator 300 has a plurality of signal processing channels, and if not, the number of the optical attenuator 300 may be increased, so as to adjust the signals of more paths of burst-like light. When the optical line terminal 400 receives the burst-like light to perform detection, the optical line terminal 400 provides an SD signal or an LOS signal to be reported to the FPGA according to the detection condition to perform alarm/go-alarm, and the optical line terminal 400 receives the burst-like light to perform detection and reports the SD signal or the LOS signal to the FPGA by using the existing technology, which is not described herein again.
It can be understood that, the testing device of the olt 400 composed of the error detector 100, the timing control board 500, the onus 200 and the optical attenuator 300 replaces the conventional burst error detector 100 to implement the test of the olt 400, so that the testing cost is reduced, and the timing control board 500 can be configured to output one or more than one enable signal BEN, so that each onu 200 can receive one enable signal BEN and continuous data of a specific code pattern to generate 1-channel type burst light, and output the 1-channel type burst light to the olt 400 after being adjusted by the optical attenuator 300, so that the 1-channel olt 400 performs optical detection, the olt 400 reports a signal to the timing control board 500 for warning after detection, so that no observation by an oscilloscope is needed, the testing cost is reduced, and when the enable signal BEN is multiple, the onus 200 are correspondingly set as multiple channels, realize the test of multichannel optical line terminal 400 with producing multichannel class burst light, so, just make the utility model discloses the testing arrangement of optical line terminal can also realize testing a plurality of optical line terminal 400, can realize the batch nature test, greatly reduced cost.
It should be noted that the burst error code can only output one burst optical signal, so that a large number of burst error code meters 100 need to be used in a batch test of a production line, and the test cost is very high under the condition that the unit price of the burst error code meters 100 is high.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. The utility model provides a testing arrangement of optical line terminal for test N optical line terminal, N is more than or equal to 1, its characterized in that, the testing arrangement of optical line terminal includes:
the error code instrument is used for outputting continuous data of a specific code pattern;
the time sequence control board is provided with at least one signal configuration end group, and the time sequence control board can configure and output N paths of enabling signals through the signal configuration end group;
the N optical network units are respectively in communication connection with the error code instrument and are electrically connected with the signal configuration end group of the time sequence control board; the N optical network units are used for receiving the continuous data of the specific code pattern and the N paths of enabling signals and generating N paths of burst lights according to the continuous data of the specific code pattern and the N paths of enabling signals;
the input end of the optical attenuator is connected with the output end optical fibers of the N optical network units, and the output end of the optical attenuator is a test interface for connecting an optical line terminal; the optical attenuator is configured to receive N paths of the burst-like light, attenuate the N paths of the burst-like light, and transmit the N paths of the burst-like light to the optical line terminal, so that the N optical line terminals perform light presence detection work, and feed back a first level signal representing a detection result to the timing control board after performing the light presence detection work;
the time sequence control board is also provided with N detection end groups, the N detection end groups are connected with the N optical line terminals, the time sequence control board receives first level signals representing detection results fed back after the N optical line terminals execute the optical detection work through the N detection end groups, and judges whether the N optical line terminals normally execute the optical detection work according to the first level signals.
2. The apparatus according to claim 1, wherein the timing control board is configured to output N optical reception strength reporting trigger signals to the N optical line terminals through the signal configuration end group to trigger the N optical line terminals to perform optical signal loss detection, and the N optical line terminals feed back a second level signal representing a detection result to the timing control board after performing the optical signal loss detection;
and the time sequence control board receives second level signals representing detection results fed back after the N optical line terminals execute the optical signal loss detection work through the N detection end groups, and judges whether the N optical line terminals normally execute the optical signal loss detection work according to the second level signals.
3. The apparatus according to claim 1, wherein when M of the N optical line terminals are GPON type, the signal configuration end group is configured to output M reset signals to the M optical line terminals of the GPON type, so as to trigger the M optical line terminals of the GPON type to reset after the timing control board determines whether the M optical line terminals of the GPON type normally perform optical presence/absence detection according to the first level signal, where M is greater than or equal to 1 and less than N.
4. The apparatus according to claim 2, wherein the timing control board further has N detection end groups,
the time sequence control board receives first level signals or second level signals fed back by the N optical line terminals through the N detection end groups;
the time sequence control board receives N-base quasi-reference signals configured by external equipment or N-base quasi-reference signals configured by the time sequence control board through N detection end groups;
the time sequence control board compares the received N first level signals with the reference signals of the corresponding paths to judge whether the N optical line terminals normally execute optical detection work or not;
and the time sequence control board compares the received second level signal with the reference signal of the corresponding path to judge whether the optical line terminal of the corresponding path normally executes the optical signal loss detection work.
5. The apparatus according to claim 4, wherein the timing control board outputs N-level reference signals to the detection end group through the signal configuration end group.
6. The apparatus according to claim 5, wherein when M of the N optical line terminals are GPON type, the signal configuration end group is configured to output M reset signals to the M optical line terminals of the GPON type, so as to trigger the M optical line terminals of the GPON type to reset after the timing control board determines whether the M optical line terminals of the GPON type normally perform optical presence/absence detection according to the first level signal, where M is greater than or equal to 1 and less than N;
the signal configuration end groups are 4 groups, each signal configuration end group is provided with 4 output ports,
the 4 output ports of each signal configuration end group can be configured to output at least one path of the enabling signal, one path of the reset signal and one path of the light receiving intensity reporting trigger signal at will.
7. The apparatus according to claim 6, wherein any output port of the 4 output ports of each signal configuration port group is further configured to output the reference signal;
the detection end group is provided with 2 input ports, wherein 1 input port is configured to be input by the first level signal or the second level signal, and the other input port is configured to be input by the reference signal.
8. The OLT testing apparatus of claim 6, wherein if the OLT is of a GPON type, one of the 4 paths is configured to output a reset signal to the OLT.
9. The apparatus according to claim 1, wherein the timing control board includes a control register for controlling simultaneous transmission of a plurality of signals of the same signal configuration port group.
10. The olt apparatus of claim 1, wherein the continuous data of the specific code pattern is a pseudo-random code.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350970A (en) * | 2019-07-31 | 2019-10-18 | 深圳市亚派光电器件有限公司 | The test device and method of optical line terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350970A (en) * | 2019-07-31 | 2019-10-18 | 深圳市亚派光电器件有限公司 | The test device and method of optical line terminal |
| CN110350970B (en) * | 2019-07-31 | 2024-05-17 | 深圳市亚派光电器件有限公司 | Testing device and method for optical line terminal |
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