JPH0485931U - - Google Patents
Info
- Publication number
- JPH0485931U JPH0485931U JP1990126459U JP12645990U JPH0485931U JP H0485931 U JPH0485931 U JP H0485931U JP 1990126459 U JP1990126459 U JP 1990126459U JP 12645990 U JP12645990 U JP 12645990U JP H0485931 U JPH0485931 U JP H0485931U
- Authority
- JP
- Japan
- Prior art keywords
- reference signal
- radio system
- disaster prevention
- terminal receiver
- prevention administrative
- 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
- 230000002265 prevention Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000007689 inspection Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 1
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
- Transmitters (AREA)
Description
第１図は本考案の実施例を示すブロツク線図、
第２図は第１図の装置の動作例を示す概略線図で
ある。
図中、１……基準信号発生器、２……減衰回路
、３……基準信号出力、４……モニタ回路、５…
…モニタスピーカ、６……変復調装置、７……音
声系増幅回路、８……マイク入力手段、９……メ
ータ回路、１０……外部端子、１１……ダミー装
置、１２……バツテリー、１３……電源部、１４
…… 、１５……液晶表示部、１６……キースイ
ツチ、１７……不揮発性メモリー、１８……ＩＣ
カード、１９……制御部、２０……本体ケーシン
グ、２１……端末装置。
FIG. 1 is a block diagram showing an embodiment of the present invention;
FIG. 2 is a schematic diagram showing an example of the operation of the apparatus shown in FIG. In the figure, 1...Reference signal generator, 2...Attenuation circuit, 3...Reference signal output, 4...Monitor circuit, 5...
... Monitor speaker, 6 ... Modulation and demodulation device, 7 ... Audio amplifier circuit, 8 ... Microphone input means, 9 ... Meter circuit, 10 ... External terminal, 11 ... Dummy device, 12 ... Battery, 13 ... ...Power supply section, 14
......, 15...Liquid crystal display section, 16...Key switch, 17...Nonvolatile memory, 18...IC
Card, 19...Control unit, 20...Main body casing, 21...Terminal device.
Claims (1)
信号発生器と、モニタ回路と、送信、受信データ
信号の変復調装置と、大電力用抵抗から成るダミ
ー装置と、防災行政無線システムの端末受信機の
電源検査用のメータ回路と、各端末受信機に係わ
るデータを記憶する記憶装置と、操作キーと、各
部の動作を制御する制御部と、表示部とをケーシ
ング内に組み込み、携帯可能な一ユニツトとして
構成したことを特徴とする防災行政無線システム
用デジタル試験装置。 A reference signal generator that generates a reference signal for setting the transmission frequency, a monitor circuit, a modulation/demodulator for transmitting and receiving data signals, a dummy device consisting of a high-power resistor, and a power source for the terminal receiver of the disaster prevention administrative radio system. A meter circuit for inspection, a storage device that stores data related to each terminal receiver, operation keys, a control unit that controls the operation of each part, and a display unit are incorporated into the casing, and it is a single portable unit. A digital test device for a disaster prevention administrative radio system, characterized by the following configuration:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990126459U JPH0485931U (en) | 1990-11-30 | 1990-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990126459U JPH0485931U (en) | 1990-11-30 | 1990-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0485931U true JPH0485931U (en) | 1992-07-27 |
Family
ID=31874015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990126459U Pending JPH0485931U (en) | 1990-11-30 | 1990-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0485931U (en) |
-
1990
- 1990-11-30 JP JP1990126459U patent/JPH0485931U/ja active Pending
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