CN209517141U - A kind of optical module test plate structure - Google Patents
A kind of optical module test plate structure Download PDFInfo
- Publication number
- CN209517141U CN209517141U CN201920355803.7U CN201920355803U CN209517141U CN 209517141 U CN209517141 U CN 209517141U CN 201920355803 U CN201920355803 U CN 201920355803U CN 209517141 U CN209517141 U CN 209517141U
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- China
- Prior art keywords
- optical module
- printed circuit
- radio
- circuit board
- power supply
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Abstract
The utility model discloses a kind of optical module test plate structure comprising printed circuit board and welding machine are in the power supply chip of printed circuit board, MCU single-chip microcontroller, serial port module, radio frequency connector, QSFP optical module, power outlet and serial ports socket；MCU single-chip microcontroller is separately connected power supply chip, serial port module and QSFP optical module, serial port module is correspondingly connected with serial ports socket, external power supply is connected to power supply chip by power outlet, power supply chip is respectively MCU single-chip microcontroller, serial port module and the power supply of QSFP optical module, QSFP optical module is connect by radio-frequency transmission line with multiple radio frequency connectors, radio-frequency transmission line is divided into more than two single-ended with difference form, one radio frequency connector of each single-ended connection, multiple radio frequency connectors and radio-frequency transmission line distribution fan-shaped with respect to QSFP optical module are on a printed circuit.The fan shaped transmission circuit structure RF loss of the utility model is small, temperature stability is high, facilitates the welding of radio frequency connector and the connection with test equipment.
Description
Technical field
The utility model relates to a kind of optical module test plate structures.
Background technique
With the development of optical communication technique, the demand of QSFP optical module is increasing in the market, low cost, high quality
It is that people constantly pursue, also optical communication device manufacturer is just forced to need to continuously improve technique, reduces cost to manufacture
The optical module of a large amount of high quality, low cost.Accordingly, it is necessary to which test high-volume optical module can be debugged simultaneously by designing and manufacturing
Equipment.
In the prior art, the prior art uses USB or I2C technology, and data can not carry out teletransmission；Secondly, optical module manufactures
Manufacturer generally uses single channel or the binary channels test board communication technology, it can be achieved that a host and one piece of test board commissioning examination one
It is a or to two optical modules, and emit and receive debugging test and be divided into different stations, it requires multiple host to be had with
Multiple manual operations, the cost of entire test macro is very high and low efficiency.
Summary of the invention
The purpose of this utility model is to provide a kind of optical module test plate structures.
The technical solution adopted in the utility model is:
A kind of optical module test plate structure comprising the bottom of printed circuit board, printed circuit board uses SMT surface mount
Mode is welded with power supply chip, MCU single-chip microcontroller and serial port module, and the surface layer of printed circuit board is welded with radio frequency connector, QSFP
Optical module, power outlet and serial ports socket；MCU single-chip microcontroller is separately connected power supply chip, serial port module and QSFP optical module, serial ports
Module is correspondingly connected with serial ports socket, and external power supply is connected to power supply chip by power outlet, and power supply chip is respectively MCU monolithic
Machine, serial port module and the power supply of QSFP optical module, QSFP optical module are connect by radio-frequency transmission line with multiple radio frequency connectors, radio frequency
One end of transmission line connects QSFP optical module, and the radio-frequency transmission line other end is divided into more than two single-ended, radio frequency with difference form
Each of transmission line one radio frequency connector of single-ended connection, multiple radio frequency connectors and radio-frequency transmission line are in respect to QSFP optical module
Sector distribution is on a printed circuit.
Further, the power supply chip selects FND339AN, the QSFP optical module select QSFP+ or
QSFP28.The bottom of printed circuit board walks DC circuit, and radio circuit is walked on the surface layer of printed circuit board.
Further, the surface layer high frequency of printed circuit board uses rogers R4350B plate.
Further, the printed circuit board is the fan-shaped printed circuit board of 4 layers of circuit.
Further, the length of every radio-frequency transmission line is consistent.
Further, the radio-frequency transmission line is 8 100 ohm differential lines, one end difference of 8 100 ohm differential lines
It is correspondingly connected with 4 transmittings and 4 receptions of QSFP optical module to be tested, socket of 8 100 ohm differential lines from QSFP optical module
Place starts separately to be transferred to fan-shaped edge with sector, the Single-end output that the other end difference of ohm differential line is two 50 ohm,
Each 50 ohm single-ended is correspondingly connected with a radio frequency connector (RF connector).
Further, printed circuit board is equipped with fixation hole, and fixation hole is used to the printed circuit board being fixed to Test bench
On fixture.
Further, the serial ports socket of printed circuit board is connected with Serial Port Line and by Serial Port Line and compunlcation.
The utility model uses above technical scheme, and the surface layer high frequency of printed circuit board uses rogers R4350B plate,
Temperature stability small, with superior dielectric constant is lost in circuit transmission.The radio-frequency transmission line of printed circuit board is fan-shaped knot
Structure can be such that the length of each channel radio frequency transmission line is consistent, reduce the differential loss of interchannel, and make module to be measured to radio frequency
The transmission range of connector is shorter, to reduce the loss of high speed signal.Circuit structure of the invention can be used for QSFP encapsulation optical mode
The test of block, RF loss is small, temperature stability is high, facilitates the welding of radio frequency connector (RF) and the company with test equipment
It connects.
Detailed description of the invention
The utility model is described in further details below in conjunction with the drawings and specific embodiments；
Fig. 1 is a kind of optical module test plate structure schematic diagram of the utility model.
Fig. 2 is a kind of partial schematic diagram of the radio-frequency transmission line of optical module test plate structure of the utility model.
Fig. 3 is a kind of circuit theory schematic diagram of optical module test plate structure of the utility model.
Specific embodiment
As shown in one of Fig. 1-3, the utility model discloses a kind of optical module test plate structures comprising printed circuit board
1, the bottom of printed circuit board 1 is welded with power supply chip 2, MCU single-chip microcontroller 3 and serial port module 4 using SMT surface mount mode,
The surface layer of printed circuit board 1 is welded with radio frequency connector 5, QSFP optical module 6, power outlet 7 and serial ports socket 8；MCU single-chip microcontroller
3 are separately connected power supply chip 2, serial port module 4 and QSFP optical module 6, and serial port module 4 is correspondingly connected with serial ports socket 8, external power supply
It is connected to power supply chip 2 by power outlet 7, power supply chip 2 is respectively MCU single-chip microcontroller 3, serial port module 4 and QSFP optical module 6
Power supply, QSFP optical module 6 are connect by radio-frequency transmission line 9 with multiple radio frequency connectors 5, one end connection of radio-frequency transmission line 9
QSFP optical module 6,9 other end of radio-frequency transmission line are divided into more than two single-ended 10 with difference form, each of radio-frequency transmission line 9
One radio frequency connector 5 of single-ended 10 connection, multiple radio frequency connectors 5 and radio-frequency transmission line 9 are with respect to 6 fan-shaped points of QSFP optical module
Cloth is on the printed circuit board 1.
Further, middle power supply chip 2 selects FND339AN as an implementation.QSFP optical module 6 selects QSFP+
Or QSFP28, MCU single-chip microcontroller 3 is 51 series monolithics or ARM series monolithic or Maxim4830 series.
Further, the bottom of printed circuit board 1 walks DC circuit, and radio circuit is walked on the surface layer of printed circuit board 1.
Further, the surface layer high frequency of printed circuit board 1 uses rogers R4350B plate.
Further, the printed circuit board 1 is the fan-shaped printed circuit board of 4 layers of circuit.
Further, the length of every radio-frequency transmission line 9 is consistent.
Further, the radio-frequency transmission line 9 is 8 100 ohm differential lines, one end difference of 8 100 ohm differential lines
4 transmittings and 4 receptions of QSFP optical module 6 to be tested are correspondingly connected with, 8 100 ohm differential lines are inserted from QSFP optical module 6
Seat place starts separately to be transferred to fan-shaped edge with sector, and the other end difference of ohm differential line is single-ended 10 defeated for two 50 ohm
Out, single-ended the 10 of each 50 ohm are correspondingly connected with a radio frequency connector 5.
Further, printed circuit board 1 is equipped with fixation hole, and fixation hole is used to for the printed circuit board 1 to be fixed to test base
On seat fixture.
Further, the serial ports socket 8 of printed circuit board 1 is connected with Serial Port Line and by Serial Port Line and compunlcation.
Power supply chip 2 and power outlet 7 are wholely set as a preferred implementation manner, serial port module 4 and serial ports socket
8 are wholely set.
The utility model uses above technical scheme, and the surface layer high frequency of printed circuit board 1 uses rogers R4350B plate
Temperature stability small, with superior dielectric constant is lost in material, circuit transmission.The radio-frequency transmission line 9 of printed circuit board 1 is fan
Shape structure can be such that the length of each channel radio frequency transmission line 9 is consistent, reduce the differential loss of interchannel, and make module to be measured
Transmission range to radio frequency connector 5 is shorter, to reduce the loss of high speed signal.Circuit structure of the invention can be used for QSFP envelope
The test of optical module is filled, RF loss is small, temperature stability is high, facilitates the welding of radio frequency connector 5 (RF) and sets with test
Standby connection.
Claims (9)
1. a kind of optical module test plate structure comprising the bottom of printed circuit board, printed circuit board uses the surface mount side SMT
Formula is welded with power supply chip, MCU single-chip microcontroller and serial port module, and the surface layer of printed circuit board is welded with radio frequency connector, QSFP light
Module, power outlet and serial ports socket；MCU single-chip microcontroller is separately connected power supply chip, serial port module and QSFP optical module, serial ports mould
Block is correspondingly connected with serial ports socket, and external power supply is connected to power supply chip by power outlet, and power supply chip is respectively MCU monolithic
Machine, serial port module and the power supply of QSFP optical module, QSFP optical module are connect by radio-frequency transmission line with multiple radio frequency connectors, special
Sign is: one end of radio-frequency transmission line connects QSFP optical module, and the radio-frequency transmission line other end is divided into two or more with difference form
It is single-ended, each of radio-frequency transmission line one radio frequency connector of single-ended connection, multiple radio frequency connectors and radio-frequency transmission line are opposite
The fan-shaped distribution of QSFP optical module is on a printed circuit.
2. a kind of optical module test plate structure according to claim 1, it is characterised in that: the power supply chip is selected
FND339AN, the QSFP optical module select QSFP+ or QSFP28.
3. a kind of optical module test plate structure according to claim 1, it is characterised in that: the bottom of the printed circuit board
DC circuit is walked, radio circuit is walked on the surface layer of printed circuit board.
4. a kind of optical module test plate structure according to claim 1, it is characterised in that: the table of the printed circuit board
Layer high frequency uses rogers R4350B plate.
5. a kind of optical module test plate structure according to claim 1, it is characterised in that: the printed circuit board is 4 layers
The fan-shaped printed circuit board of circuit.
6. a kind of optical module test plate structure according to claim 1, it is characterised in that: the length of every radio-frequency transmission line
It is consistent.
7. a kind of optical module test plate structure according to claim 1, it is characterised in that: the radio-frequency transmission line is 8
100 ohm differential lines, one end of 8 100 ohm differential lines are connected respectively 4 transmittings and 4 of QSFP optical module to be tested
A reception, 8 100 ohm differential lines from the socket of QSFP optical module with sector be separately transferred to fan-shaped edge, ohm
The other end difference of differential lines is two 50 ohm of Single-end output, and each 50 ohm single-ended is correspondingly connected with a radio frequency connection
Device.
8. a kind of optical module test plate structure according to claim 1, it is characterised in that: printed circuit board, which is equipped with, to be fixed
Hole, fixation hole are used to the printed circuit board being fixed to Test bench fixture.
9. a kind of optical module test plate structure according to claim 1, it is characterised in that: the serial ports socket of printed circuit board
It is connected with Serial Port Line and by Serial Port Line and compunlcation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920355803.7U CN209517141U (en) | 2019-03-20 | 2019-03-20 | A kind of optical module test plate structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920355803.7U CN209517141U (en) | 2019-03-20 | 2019-03-20 | A kind of optical module test plate structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209517141U true CN209517141U (en) | 2019-10-18 |
Family
ID=68187397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920355803.7U Active CN209517141U (en) | 2019-03-20 | 2019-03-20 | A kind of optical module test plate structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209517141U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113485174A (en) * | 2021-06-16 | 2021-10-08 | 深圳市极致兴通科技有限公司 | MCB board meeting optical module black box test |
-
2019
- 2019-03-20 CN CN201920355803.7U patent/CN209517141U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113485174A (en) * | 2021-06-16 | 2021-10-08 | 深圳市极致兴通科技有限公司 | MCB board meeting optical module black box test |
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