JPH0243033U - - Google Patents
Info
- Publication number
- JPH0243033U JPH0243033U JP1988121359U JP12135988U JPH0243033U JP H0243033 U JPH0243033 U JP H0243033U JP 1988121359 U JP1988121359 U JP 1988121359U JP 12135988 U JP12135988 U JP 12135988U JP H0243033 U JPH0243033 U JP H0243033U
- Authority
- JP
- Japan
- Prior art keywords
- test
- modulation
- function
- control signal
- demodulation device
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Description
第１図はこの考案の一実施例を示すブロツク図
、第２図はメインチヤンネルとサブチヤンネルの
関係を示す図、第３図は従来の一例を示すブロツ
ク図である。
１２……サブチヤンネル復調回路、１３……サ
ブチヤンネル変調回路、１４……サブチヤンネル
ループ命令検出回路、１５……サブチヤンネルル
ープ命令出力回路。
FIG. 1 is a block diagram showing an embodiment of this invention, FIG. 2 is a diagram showing the relationship between a main channel and a subchannel, and FIG. 3 is a block diagram showing a conventional example. 12...Subchannel demodulation circuit, 13...Subchannel modulation circuit, 14...Subchannel loop command detection circuit, 15...Subchannel loop command output circuit.
Claims (1)
装置において、 メインチヤンネル周波数とは異なるサブチヤン
ネル周波数によつて制御信号を送信する送信機能
を備えた試験側装置と、 サブチヤンネルで制御信号の受信が行われたと
きループ試験を行う受信機能を備えた被試験側装
置とを備えたことを特徴とする変復調装置。[Claims for Utility Model Registration] In a modulation/demodulation device having a loop test function to a partner station, a test side device having a transmission function of transmitting a control signal at a subchannel frequency different from the main channel frequency; 1. A modulation/demodulation device comprising: a device under test having a reception function that performs a loop test when a control signal is received on a channel;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988121359U JPH0243033U (en) | 1988-09-16 | 1988-09-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988121359U JPH0243033U (en) | 1988-09-16 | 1988-09-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0243033U true JPH0243033U (en) | 1990-03-26 |
Family
ID=31368296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988121359U Pending JPH0243033U (en) | 1988-09-16 | 1988-09-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0243033U (en) |
-
1988
- 1988-09-16 JP JP1988121359U patent/JPH0243033U/ja active Pending
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