JPH02288521A - Transmitter-receiver - Google Patents

Transmitter-receiver

Info

Publication number
JPH02288521A
JPH02288521A JP1109374A JP10937489A JPH02288521A JP H02288521 A JPH02288521 A JP H02288521A JP 1109374 A JP1109374 A JP 1109374A JP 10937489 A JP10937489 A JP 10937489A JP H02288521 A JPH02288521 A JP H02288521A
Authority
JP
Japan
Prior art keywords
output
circuit
fault
failure
outdoor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1109374A
Other languages
Japanese (ja)
Inventor
Masahito Matsunami
松浪 将仁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1109374A priority Critical patent/JPH02288521A/en
Publication of JPH02288521A publication Critical patent/JPH02288521A/en
Pending legal-status Critical Current

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  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Radio Relay Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To allow an indoor equipment to monitor the fault state of an outdoor equipment by providing a notice means informing the presence of a fault to the indoor equipment and informing the fault with an output from a fault detection means of the outdoor equipment. CONSTITUTION:A 1st comparator 38 in the inside of an outdoor equipment 21 discriminates the presence of a transmission input signal and a 2nd comparator 38 discriminates the presence of a transmission output signal, and an output of an EX-OR circuit 40 represents the presence of a fault relating to the correlation of the transmission input and output signal. An H representing the result of diagnosis of a fault item to be monitored in the fault state is inputted to the input of an OR circuit 41 and an L level and an L level representing that in the normal state is inputted thereto, and an output of the OR circuit 41 goes to H when a fault takes place in any of fault diagnostic items to drive a transistor(TR) 42 and to light a light emitting element 44 in an indoor equipment 20 thereby informing the occurrence of the fault. Thus, the fault of the outdoor equipment is found out early and the reliability of the outdoor equipment is improved.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、衛星を介した通信網などに用いられる、屋内
装置と屋外装置からなる送受信装置に関するものである
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a transmitting/receiving device comprising an indoor device and an outdoor device, which is used in a communication network via a satellite.

従来の技術 近年、通信事業の拡大とともに、無線信号の送受信を行
う装置の重要性は増してきている。
2. Description of the Related Art In recent years, with the expansion of the telecommunications business, the importance of devices that transmit and receive wireless signals has increased.

以下、図面を参照しながら従来の送受信装置について説
明する。
A conventional transmitting/receiving device will be described below with reference to the drawings.

第2図は従来の送受信装置の回路構成図の一例である。FIG. 2 is an example of a circuit configuration diagram of a conventional transmitting/receiving device.

同図において、1は屋内装置、2は屋外装置であり、屋
外装置2は送信部を中心に示している。
In the figure, 1 is an indoor device, 2 is an outdoor device, and the outdoor device 2 mainly shows the transmitter.

3は送信信号を屋内装置1から屋外装置2へ伝送するケ
ーブルであり、4は可変減衰器、6は中間周波増幅器(
以後、IF AMP と称す。)であり、可変減衰器4
とIF AMP 5により、可変利得増幅器を構成して
いる。可変減衰器4は自動レベル制御回路(以下ムLC
回路と称す)からの制御電圧が大きくなれば減衰量が増
加する構成となっている。6は周波数変換器であり、7
は位相同期発振器(以後、PLOと称す。)、8はPL
O7の位相がロックしているかどうかを検出するロック
検出回路であり、周波数変換器6の出力は電力増幅器9
に接続される。10は出力端子Poutおよび検波器1
1に出力を分配する電力分配器であり1、検波器11の
出力は送信出力を一定電力に制御するための制御信号を
出力するALC回路12に接続され、ムLC回路12の
出力はロック検出回路8の出力により制御されるスイッ
チ13を介して。
3 is a cable that transmits the transmission signal from the indoor device 1 to the outdoor device 2, 4 is a variable attenuator, and 6 is an intermediate frequency amplifier (
Hereinafter, it will be referred to as IF AMP. ), and the variable attenuator 4
and IF AMP 5 constitute a variable gain amplifier. The variable attenuator 4 is an automatic level control circuit (hereinafter referred to as MLC).
The structure is such that the amount of attenuation increases as the control voltage from the circuit increases. 6 is a frequency converter, 7
is a phase-locked oscillator (hereinafter referred to as PLO), 8 is a PL
This is a lock detection circuit that detects whether the phase of O7 is locked, and the output of the frequency converter 6 is connected to the power amplifier 9.
connected to. 10 is the output terminal Pout and the detector 1
The output of the detector 11 is connected to an ALC circuit 12 that outputs a control signal for controlling the transmission output to a constant power, and the output of the MLC circuit 12 is used for lock detection. Via switch 13 controlled by the output of circuit 8.

可変減衰器4の制御信号となる。また、可変減衰器4の
減衰量制御端子にはDC電源との間に、抵抗14を接続
する。検波器11の出力は比較器160入力ともなり、
比較器16の他方の入力には基準電圧16が接続される
。17はOft回路であジ、その入力にはロック検出回
路8の出力や比較器16の出力などが接続される。OR
回路17の出力はトランジスタ1st−介して、報知手
段として用いた発光素子19を駆動する。
This becomes a control signal for the variable attenuator 4. Further, a resistor 14 is connected between the attenuation amount control terminal of the variable attenuator 4 and the DC power supply. The output of the detector 11 also serves as the input of the comparator 160,
A reference voltage 16 is connected to the other input of the comparator 16. Reference numeral 17 denotes an Of circuit, to which the output of the lock detection circuit 8, the output of the comparator 16, etc. are connected. OR
The output of the circuit 17 drives a light emitting element 19, which is used as a notification means, through a transistor 1st.

以上のように構成された従来の送受信装置の動作説明を
以下に示す。
The operation of the conventional transmitting/receiving device configured as described above will be explained below.

屋内装置1からの送信信号は可変減衰器4、IF AM
P5、周波数変換器6、電力増幅器9.電力分配器10
、検波器11、ALC回路12で構成される閉回路によ
り、一定の出力電力となるように増幅され、出力される
。また、周波数変換器6の局部発振器となるPLO7の
位相がロックされているかどうかをロック検出回路8で
検出し。
The transmission signal from the indoor device 1 is transmitted through a variable attenuator 4, IF AM
P5, frequency converter 6, power amplifier 9. Power divider 10
, a detector 11, and an ALC circuit 12, the signal is amplified to a constant output power and output. Further, a lock detection circuit 8 detects whether the phase of the PLO 7, which is a local oscillator of the frequency converter 6, is locked.

ロックしているときはスイッチ13を閉じ、ムLC回路
12の働きで、一定電力が出力される。一方、ロックが
外れているときは、スイッチ13炉開き、抵抗14を介
して可変減衰器4の減衰量制御端子に正のDC電圧が供
給され、減衰量が最大となり、送信出力全停止させてい
る。
When locked, the switch 13 is closed and the MLC circuit 12 works to output constant power. On the other hand, when the lock is released, the switch 13 opens and a positive DC voltage is supplied to the attenuation amount control terminal of the variable attenuator 4 via the resistor 14, and the attenuation amount becomes maximum and the transmission output is completely stopped. .

次に、故障検知機能の説明全行う。Next, we will fully explain the failure detection function.

OR回路17の入力には、監視している故障項目の診断
結果が“°H”、あるいはnL”の信号電圧として入力
される。第、2図に示した従来例では、故障時はIIH
”、正常時は“L”として入力される。OR回路17の
第1の入力端子には、PLOToaツクがかかっている
かどりかfaミック出回路8によって検出し、その結果
を入力する。第2の入力端子には、所望の出力電力に対
応した基準電圧16と検波器11の出力を比較器16で
比較することにより、所望の出力電力が出力されている
かどうかを検出する。その他の入力端子には、たとえば
、屋外装置内のDC電圧や温度上昇が正常な値であるか
どうかの診断結果や、受信装置のPLOのロックがかか
っているかどうかの診断結果などが入力される。前記し
た入力信号のいずれかに故障(パH”)が現われると、
OR回路17の出力はtゞH”となり、トランジスタ1
8を駆動して1発光素子19を発光させる。その結果、
屋外装置の故障が知らされる。
The diagnosis result of the monitored failure item is inputted to the input of the OR circuit 17 as a signal voltage of "°H" or nL.In the conventional example shown in FIG.
”, and is input as “L” during normal operation.The first input terminal of the OR circuit 17 detects whether or not the PLOToa switch is applied by the famic output circuit 8, and inputs the result. The comparator 16 compares the reference voltage 16 corresponding to the desired output power with the output of the detector 11 to detect whether or not the desired output power is being output.Other input terminals For example, the diagnosis result of whether the DC voltage and temperature rise in the outdoor device are normal values, the diagnosis result of whether the PLO of the receiving device is locked, etc. are input. If a fault (PAH”) appears in any of the signals,
The output of the OR circuit 17 becomes tゞH'', and the transistor 1
8 to cause one light emitting element 19 to emit light. the result,
Notification of failure of outdoor equipment.

発明が解決しようとする課題 第2図に示すような従来の送受信装置においては、屋外
装置2が故障を検知しても、屋内装置1には知らされな
いので屋内装置1からは屋外装置2に故障が存在してい
るかどうか検知できず、故障の発見が遅れ、屋外装置2
の信頼性が低下するという課題があった・ 本発明はこのような課題に鑑み、屋外装置の故障状況が
屋内装置で監視できるようにすることを目的としている
Problems to be Solved by the Invention In the conventional transmitting/receiving device as shown in FIG. 2, even if the outdoor device 2 detects a failure, the indoor device 1 is not notified of the failure, so the indoor device 1 informs the outdoor device 2 of the failure. It is not possible to detect whether the
In view of this problem, the present invention aims to enable an indoor device to monitor the failure status of an outdoor device.

課題を解決するための手段 そしてこの目的を達成するために本発明は、屋内装置に
故障の有無を知らせる報知手段を設け、この報知手段は
故障検知時に、前記屋外装置の故障検知手段からの出力
により故障を報知する構成としたものである。
Means for Solving the Problems In order to achieve this object, the present invention provides a notification means to notify the presence or absence of a failure in an indoor device, and when a failure is detected, the notification means receives the output from the failure detection means of the outdoor device. The structure is such that a failure is notified by.

作用 前記のような構成により、屋外装置から屋内装置へ故障
の有無が知らされ、屋外装置の故障を検知することが可
能となったので、故障の発見が早くなり、屋外装置の信
頼性が向上する。
Effect: With the above-mentioned configuration, the presence or absence of a failure is notified from the outdoor device to the indoor device, making it possible to detect a failure in the outdoor device.Failures can be detected quickly and the reliability of the outdoor device is improved. do.

実施例 以下、・図面を参照しながら、本発明による送受信装置
について説明する。
Embodiments Hereinafter, a transmitting/receiving device according to the present invention will be described with reference to the drawings.

第1図は本発明による送受信装置による一実施例の回路
構成図である。
FIG. 1 is a circuit diagram of an embodiment of a transmitting/receiving device according to the present invention.

同図において、20は屋内装置、21は屋外装置であり
、屋外装置21は送信部を中心に示しである。22は送
信信号を屋内装置20から屋外装置21に伝送するケー
ブル、23は送信入力信号を第1の検波器24と可変減
衰器26に分配する第1の電力分配器であり、可変減衰
器26はムLC回路33からの制御電圧が大きくなれば
、減衰量が増加する構成となっている。26はIF A
MPであり、可変減衰器26とIFAMP26で可変利
得増幅器を構成している。2Tは周波数変換器であり、
28は周波数変換器27の局部発振器となるPLO,2
9はPL+028の位相がロックしているかどうかを検
知するロック検出回路であり、周波数変換器27の出力
は電力増幅器3oに接続される。31は出力端子Pou
tおよび、第2か検波器32に出力を分配するための第
2の電力分配器であり、第2の検波器32の出力は送信
出力を一定電力に制御するための制御信号を出力するム
LC回路33に接続され、ムLC回路33の出力はOR
回路41の出力により制御されるスイッチ34を介して
、可変減衰器260制御信号となる。また、可変減衰器
25の減衰量制御端子にはDC電源との間に、抵抗36
f、接続する。第2の検波器32の出力は第2の比較器
36の入力ともなり、第2の比較器36の他方の入力に
は第2の基準電圧37が接続される。一方、38は第1
の比較器であり、その入力には第1の検波器24の出力
、および、第1の基準電圧39が接続される。
In the figure, 20 is an indoor device, 21 is an outdoor device, and the outdoor device 21 mainly shows the transmitter. 22 is a cable that transmits the transmission signal from the indoor device 20 to the outdoor device 21; 23 is a first power divider that distributes the transmission input signal to the first detector 24 and the variable attenuator 26; The structure is such that the amount of attenuation increases as the control voltage from the LC circuit 33 increases. 26 is IF A
MP, and the variable attenuator 26 and IFAMP 26 constitute a variable gain amplifier. 2T is a frequency converter,
28 is a PLO, 2 which becomes a local oscillator of the frequency converter 27.
A lock detection circuit 9 detects whether the phase of PL+028 is locked, and the output of the frequency converter 27 is connected to the power amplifier 3o. 31 is the output terminal Pou
t and a second power divider for distributing the output to the second wave detector 32, and the output of the second wave detector 32 is a power divider for outputting a control signal for controlling the transmission output to a constant power. It is connected to the LC circuit 33, and the output of the LC circuit 33 is OR.
Through switch 34 controlled by the output of circuit 41 becomes the variable attenuator 260 control signal. In addition, a resistor 36 is connected between the attenuation amount control terminal of the variable attenuator 25 and the DC power supply.
f. Connect. The output of the second detector 32 also serves as the input of the second comparator 36, and the other input of the second comparator 36 is connected to the second reference voltage 37. On the other hand, 38 is the first
The output of the first detector 24 and the first reference voltage 39 are connected to the inputs of the comparator.

第1、および、第2の比較器38.36の出力は、それ
ぞれ、EX−OR回路に接続され、その出力はOR回路
41に接続される。OR回路41には。
The outputs of the first and second comparators 38 and 36 are each connected to an EX-OR circuit, and the output thereof is connected to an OR circuit 41. In the OR circuit 41.

そのほかロック検出回路29の出力などが接続され、そ
の出力はトランジスタ42とケーブル43を経て、屋内
装置2oへ導かれ、報知手段として用いた発光素子44
に接続される。
In addition, the output of the lock detection circuit 29 is connected, and the output is led to the indoor device 2o via a transistor 42 and a cable 43, and a light emitting element 44 used as a notification means.
connected to.

以上のように構成した本実施例による送受信装置の動作
説明を以下に示す。
An explanation of the operation of the transmitting/receiving device according to this embodiment configured as described above will be described below.

屋内装置2oからの送信信号は可変減衰器26、ZF 
AMP26.周波数変換器2ア、電力増幅器30、第2
の電力分配器31、第2の検波器32゜ムLC回路33
で構成される閉回路により、一定の出力電力となるよう
に増幅され、出力される。
The transmission signal from the indoor device 2o is transmitted through a variable attenuator 26, ZF
AMP26. Frequency converter 2a, power amplifier 30, second
power divider 31, second detector 32° LC circuit 33
A closed circuit consisting of amplifies and outputs a constant output power.

OR回路41の入力には、監視している故障項目の診断
結果がH”、あるいは It L Itの信号電圧とし
て入力される。第1図に示した実施例では。
The diagnosis result of the monitored failure item is input to the input of the OR circuit 41 as a signal voltage of H'' or It L It. In the embodiment shown in FIG.

故障時はI Hl”、正常時はL″として入力され。It is input as "IHl" when there is a failure, and as "L" when it is normal.

OR回路41の出力は故障の有無を示す信号となり、故
障診断項目のいずれか一つにでも故障が発生すると°゛
H”となり、トランジスタ42を駆動し、屋内装置内の
発光素子44を発光させることにより、故障の発生を知
らせる。また、OR回路41の出力はスイッチ34の開
閉をも制御し、故障がないとき(OR回路41の出カバ
L′”)はスイッチ34を閉じ、ムLC回路33の働き
で屋外装置から一定7.力を出力する。一方、なんらか
の故障が存在するとき(OR回路41の出力IT H1
1)はスイッチ34を開き、抵抗36を介してDC電圧
が可変減衰器26の減衰量制御端子に供給され。
The output of the OR circuit 41 becomes a signal indicating the presence or absence of a failure, and if a failure occurs in any one of the failure diagnosis items, it becomes °゛H, drives the transistor 42, and causes the light emitting element 44 in the indoor device to emit light. The output of the OR circuit 41 also controls the opening and closing of the switch 34, and when there is no failure (output cover L''' of the OR circuit 41), the switch 34 is closed and the LC circuit is closed. 7. From the outdoor equipment due to the function of 33. Output force. On the other hand, when some kind of failure exists (the output IT H1 of the OR circuit 41
1) opens the switch 34, and a DC voltage is supplied to the attenuation amount control terminal of the variable attenuator 26 via the resistor 36;

減衰量が最大となり、送信出力を停止させる。The amount of attenuation reaches its maximum and the transmission output is stopped.

第1の比較器38は送信入力信号の有無を、第2の比較
器36は送信出力信号の有無を判別し、それぞれ、入力
信号があるときはl+H″′、無いときはI、 ′l 
+出力する。送信入出力信号が共に存在するとき、ある
いは、共に存在しないとき、EX−OR回路40の出力
はI l、 l“となり、送信入出力信号の相関に関し
ては故障がないことを示している。第1の比較器38の
出力がII H11で、第2の比較器36の出力がtt
L”のときは屋外装置21内部のいずれかの場所で、断
線等の故障が生じたときであり、EX−OR回路4oの
出力は+1)i”、OR回路41の出力はIIH”とな
り、スイッチ34全開き、可変減衰器26の減衰量全最
大とすることにより、送信利得を最小とし、送信部から
放出される雑音電力を抑制している。この時、従来例の
ように、スイッチ34を開かなかったならば、送信出力
が存在しないので、ALC回路33の働きで可変減衰器
26の減衰量は最小となり、送信利得は最大となる。そ
の結果、屋外装置21の送信部から出力される雑音電力
はきわめて大きなものとなり、他の送信機の妨害となる
The first comparator 38 determines the presence or absence of a transmission input signal, and the second comparator 36 determines the presence or absence of a transmission output signal, and when there is an input signal, l + H''', and when there is no input signal, I, 'l
+ Output. When both the transmission input and output signals exist or when both of them do not exist, the output of the EX-OR circuit 40 becomes I l, l'', indicating that there is no failure regarding the correlation of the transmission input and output signals. The output of the first comparator 38 is II H11, and the output of the second comparator 36 is tt
When it is L'', a failure such as a disconnection occurs somewhere inside the outdoor device 21, and the output of the EX-OR circuit 4o is +1)i'', the output of the OR circuit 41 is IIH'', By fully opening the switch 34 and maximizing the attenuation of the variable attenuator 26, the transmission gain is minimized and the noise power emitted from the transmitter is suppressed.At this time, as in the conventional example, the switch 34 is If it is not opened, there is no transmission output, so the attenuation of the variable attenuator 26 is minimized by the action of the ALC circuit 33, and the transmission gain is maximized.As a result, the output from the transmitting section of the outdoor device 21 is The noise power generated by the transmitter becomes extremely large and interferes with other transmitters.

さらにこの時、屋内装置20内の発光素子44を発光さ
せることにより、屋内装置2oで屋外装置21に故障が
生じたことが発見されるので故障の発見が早くなり、屋
外装置の信頼性も向上する。
Furthermore, at this time, by causing the light-emitting element 44 in the indoor device 20 to emit light, it is discovered that a failure has occurred in the outdoor device 21 in the indoor device 2o, so the failure can be discovered quickly and the reliability of the outdoor device is improved. do.

また、第1の比較器38の出力が°゛L”で、第2の比
較器36の出力が°゛H”のときは、IF AMP26
、電力増幅器3oのいずれかに発振が生じたときであり
、このときも、EX−OR回路4oの出力は°9H” 
OR回路41の出力はII HIffとなり、スイッチ
34を開き、送信出力を停止させ、屋内装置20に故障
の発生を知らせる。
Further, when the output of the first comparator 38 is °゛L'' and the output of the second comparator 36 is °゛H'', the IF AMP26
, when oscillation occurs in one of the power amplifiers 3o, and at this time as well, the output of the EX-OR circuit 4o is 9H"
The output of the OR circuit 41 becomes II HIff, opens the switch 34, stops the transmission output, and notifies the indoor device 20 of the occurrence of a failure.

以上の説明で明らかなように、送信入力信号と出力信号
の相関においては、故障時にのみ、屋内装置20に故障
の発生を伝えることとなV、従来例のように、送信入力
信号がない場合も1発光素子44が発光するという課題
が解決できる。
As is clear from the above explanation, in the correlation between the transmission input signal and the output signal, the occurrence of a failure is notified to the indoor device 20 only in the event of a failure.As in the conventional example, when there is no transmission input signal, Also, the problem that one light emitting element 44 emits light can be solved.

OR回路41には、PLO28のロックがかかっている
かどうかを判別するロック検出回路29の出力も入力さ
れ、PLO28のロックがかかつていないときは、同様
に、送信出力を停止し、屋内装置20に故障の発生を知
らせる。
The output of the lock detection circuit 29 that determines whether or not the PLO 28 is locked is also input to the OR circuit 41, and if the PLO 28 has never been locked, the transmission output is similarly stopped and the output is sent to the indoor device 20. Informs you of the occurrence of a malfunction.

OR回路41のその他の入力端子には、たとえば、屋外
装置21内のDC電圧や温度上昇が正常な値であるかど
うかの診断結果や、受信装置のPLO28のロックがか
かっているかどうかの診断結果などが入力される。前記
した入力信号のいずれかに故障(°゛H”)が現われる
と、OR回路41の出力は°゛H”となり、トランジス
タ42を駆動して、屋内装置20に、故障の発生を知ら
せ、送信出力を停止させる。その結果、・屋外装置21
の故障を早く検知でき、信頼性を向上させることができ
る。
Other input terminals of the OR circuit 41 include, for example, the diagnosis result of whether the DC voltage and temperature rise in the outdoor device 21 are normal values, or the diagnosis result of whether the PLO 28 of the receiving device is locked. etc. are input. When a failure (°゛H") appears in any of the input signals described above, the output of the OR circuit 41 becomes °゛H", which drives the transistor 42 to notify the indoor device 20 of the occurrence of the failure and sends a message. Stop output. As a result, outdoor equipment 21
failures can be detected early and reliability can be improved.

なお、本実施例では、屋内装置20と屋外装置210間
を伝送する送信入力信号と故障情報信号を別ケーブルで
接続したが、−本のケーブルに重畳させて伝送してもか
まわない。
In this embodiment, the transmission input signal and the failure information signal transmitted between the indoor device 20 and the outdoor device 210 are connected using separate cables, but they may be transmitted by being superimposed on one cable.

発明の詳細 な説明したように、本発明によれば、屋外装置から屋内
装置の報知手段に、この屋外装置の故障の有無を知らせ
るので、屋外装置の故障を早く発見でき、屋外装置の信
頼性が向上する。また、上記実施例ではなんらかの故障
発生時に、送信利得を最小にするので、屋外装置からの
雑音出力がきわめて少なくなり、他の送受信装置への妨
害を抑制することが可能となる。さらに、屋外装置の入
力送信信号と出力送信信号の有無を、それぞれ、検知す
る手段と、前記入力送信信号と前記出力送信信号のいず
れか一方のみが存在するとき、前記屋外装置が故障であ
ると判断する手段を備えたため、故障時にのみ、屋内装
置に故障の発生を知らせることが可能となった。
As described in detail, according to the present invention, since the outdoor device notifies the notification means of the indoor device of the presence or absence of a failure in the outdoor device, failures in the outdoor device can be discovered early, and the reliability of the outdoor device can be improved. will improve. Furthermore, in the above embodiment, when some kind of failure occurs, the transmission gain is minimized, so the noise output from the outdoor device is extremely reduced, making it possible to suppress interference to other transmitting/receiving devices. Furthermore, means for detecting the presence or absence of an input transmission signal and an output transmission signal of the outdoor device, respectively, and when only one of the input transmission signal and the output transmission signal is present, it is determined that the outdoor device is malfunctioning. By providing a means for determining this, it is now possible to notify the indoor equipment of the occurrence of a failure only in the event of a failure.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明による送受信装置の一実施例の回路構成
図であV%第2図は従来の送受信装置の回路構成図であ
る。 2o・・・・・・屋内装置、21・・・・・・屋外装置
、22゜43・・・・・・ケーブル、23.31・・・
・・・電力分配器、24.32・・・・・・検波器、2
6・・・・・・可変減衰器、26.30・・・・・・増
幅器、27・・・・・・周波数変換器。 28・・・・・・PLO129・・・・・・ロック検出
回路、33・・・・・・ムLC回路、34・・・・・・
スイッチ、36・・・・・・抵抗、36.38・・・・
・・比較器、37.39・・・・・・基準電圧、40・
・・・・・NX−0R回路、41・・・・・・OR回路
、42・・・・・・トランジスタ、44・・・・・・発
光素子(報知手段)。
FIG. 1 is a circuit diagram of an embodiment of a transmitting/receiving device according to the present invention, and V% FIG. 2 is a circuit diagram of a conventional transmitting/receiving device. 2o...Indoor device, 21...Outdoor device, 22゜43...Cable, 23.31...
...Power divider, 24.32...Detector, 2
6...Variable attenuator, 26.30...Amplifier, 27...Frequency converter. 28...PLO129...Lock detection circuit, 33...MuLC circuit, 34...
Switch, 36... Resistor, 36.38...
...Comparator, 37.39...Reference voltage, 40.
...NX-0R circuit, 41...OR circuit, 42...transistor, 44...light emitting element (notification means).

Claims (3)

【特許請求の範囲】[Claims] (1)屋内装置とこの屋内装置と接続された屋外装置と
を備え、前記屋外装置は故障検知手段を有し、この故障
検知手段からの出力を前記屋内装置に設けた報知手段に
送付する構成とした送受信装置。
(1) A configuration comprising an indoor device and an outdoor device connected to the indoor device, the outdoor device having a failure detection means, and sending an output from the failure detection means to a notification means provided in the indoor device. A transmitting and receiving device.
(2)屋外装置は、可変利得増幅器を有した送信部を備
え、故障検知時に前記可変利得増幅器の利得を最小にす
る構成とした請求項1記載の送受信装置。
(2) The transmitting/receiving device according to claim 1, wherein the outdoor device includes a transmitting section having a variable gain amplifier, and is configured to minimize the gain of the variable gain amplifier when a failure is detected.
(3)屋外装置の入力送信信号と出力送信信号の有無を
、それぞれ、検知する手段と、前記入力送信信号と前記
出力送信信号のいずれか一方が存在するとき、前記屋外
装置が故障であると判断する手段を備えた請求項1記載
の送受信装置。
(3) means for detecting the presence or absence of an input transmission signal and an output transmission signal of the outdoor device; and when either the input transmission signal or the output transmission signal is present, it is determined that the outdoor device is malfunctioning. The transmitting/receiving device according to claim 1, further comprising means for determining.
JP1109374A 1989-04-28 1989-04-28 Transmitter-receiver Pending JPH02288521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1109374A JPH02288521A (en) 1989-04-28 1989-04-28 Transmitter-receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1109374A JPH02288521A (en) 1989-04-28 1989-04-28 Transmitter-receiver

Publications (1)

Publication Number Publication Date
JPH02288521A true JPH02288521A (en) 1990-11-28

Family

ID=14508619

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1109374A Pending JPH02288521A (en) 1989-04-28 1989-04-28 Transmitter-receiver

Country Status (1)

Country Link
JP (1) JPH02288521A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55105455A (en) * 1979-02-06 1980-08-13 Nec Corp Transmitter/receiver monitor system
JPS61107833A (en) * 1984-10-31 1986-05-26 Hitachi Denshi Ltd Fault detection display system of radio telephone set of terminal station

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55105455A (en) * 1979-02-06 1980-08-13 Nec Corp Transmitter/receiver monitor system
JPS61107833A (en) * 1984-10-31 1986-05-26 Hitachi Denshi Ltd Fault detection display system of radio telephone set of terminal station

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