JPH0221880U - - Google Patents
Info
- Publication number
- JPH0221880U JPH0221880U JP1988093989U JP9398988U JPH0221880U JP H0221880 U JPH0221880 U JP H0221880U JP 1988093989 U JP1988093989 U JP 1988093989U JP 9398988 U JP9398988 U JP 9398988U JP H0221880 U JPH0221880 U JP H0221880U
- Authority
- JP
- Japan
- Prior art keywords
- radio frequency
- frequency oscillator
- station device
- electric field
- wave
- 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
- 230000005684 electric field Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Selective Calling Equipment (AREA)
- Mobile Radio Communication Systems (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Description
第１図は本考案実施例における電界強度測定装
置のブロツク図、第２図は同じく設置例を示す正
面図である。
１：リモートコントロール装置、２，１０：無
線周波数発振器、３：トーン発振器、４，１１：
送信用電力増幅器、５：帯域通過フイルタ、６：
スイツチ、７，１２：受信機、８：トーン検出回
路、９：タイマー、１３：受信電界表示器、１４
：受信感度調整回路。
FIG. 1 is a block diagram of an electric field strength measuring device according to an embodiment of the present invention, and FIG. 2 is a front view showing an example of installation. 1: Remote control device, 2, 10: Radio frequency oscillator, 3: Tone oscillator, 4, 11:
Transmission power amplifier, 5: Bandpass filter, 6:
Switch, 7, 12: Receiver, 8: Tone detection circuit, 9: Timer, 13: Received electric field indicator, 14
:Reception sensitivity adjustment circuit.
Claims (1)
からの被測定波を受信し、電界強度を測定する子
局装置とからなる無線回線試験装置において、 上記子局装置に設けられた、リモートコントロ
ールスイツチと、このリモートコントロールスイ
ツチに連動して低周波を発振する無線周波数発振
器、 上記親局装置に設けられた、上記無線周波発振
器からの低周波を検出するトーン検出回路と、こ
のトーン検出回路による低周波検出時に、被測定
波を発振する無線周波数発振器、 上記子局装置に設けられた、上記無線周波数発
振器からの被測定波を受信し、その受信状態にも
とづいて電界強度を表示する受信電界表示器、 とからなることを特徴とする電界強度測定装置。[Scope of Claim for Utility Model Registration] In a radio line testing device consisting of a master station device that transmits a wave to be measured and a slave station device that receives the wave to be measured from the master station device and measures the electric field strength, the above-mentioned A remote control switch provided on the slave station device, a radio frequency oscillator that oscillates a low frequency in conjunction with the remote control switch, and a radio frequency oscillator provided on the master station device that detects the low frequency from the radio frequency oscillator. a tone detection circuit; a radio frequency oscillator that oscillates a measured wave when the tone detection circuit detects a low frequency; and a radio frequency oscillator that receives the measured wave from the radio frequency oscillator provided in the slave station, and its reception state. An electric field strength measuring device comprising: a received electric field indicator that displays electric field strength based on the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988093989U JPH0221880U (en) | 1988-07-18 | 1988-07-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988093989U JPH0221880U (en) | 1988-07-18 | 1988-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0221880U true JPH0221880U (en) | 1990-02-14 |
Family
ID=31318478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988093989U Pending JPH0221880U (en) | 1988-07-18 | 1988-07-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0221880U (en) |
-
1988
- 1988-07-18 JP JP1988093989U patent/JPH0221880U/ja active Pending
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