JPS63165917U - - Google Patents
Info
- Publication number
- JPS63165917U JPS63165917U JP5866687U JP5866687U JPS63165917U JP S63165917 U JPS63165917 U JP S63165917U JP 5866687 U JP5866687 U JP 5866687U JP 5866687 U JP5866687 U JP 5866687U JP S63165917 U JPS63165917 U JP S63165917U
- Authority
- JP
- Japan
- Prior art keywords
- gain amplifier
- variable gain
- programmable
- output level
- automatic variable
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Tests Of Electronic Circuits (AREA)
- Control Of Amplification And Gain Control (AREA)
Description
第１図は本考案のプログラマブル信号発生装置
の一実施例を示すブロツク図、第２図は同装置に
よる出力レベルの可変例を示す図、第３図はプロ
グラマブル信号発生装置で受信機のスケルチ感度
特性を試験するときの接続図、第４図ａ，ｂはプ
ログラマブル信号発生装置で受信機のスケルチ感
度特性を試験したときの測定例を示す図、第５図
は従来のプログラマブル信号発生装置の一例を示
すブロツク構成図、第６図は従来のプログラマブ
ル信号発生装置による出力レベルの可変例を示す
図である。
１……信号発生器、２……自動可変利得増幅器
、３……プログラマブル抵抗減衰器、４……プロ
グラマブル電圧発生器、５……第１制御手段、６
……第２制御手段、１０……連続可変指令手段、
１２……制御部。
Fig. 1 is a block diagram showing one embodiment of the programmable signal generator of the present invention, Fig. 2 is a diagram showing an example of variable output level by the same device, and Fig. 3 is a programmable signal generator with receiver squelch sensitivity. Connection diagram for testing characteristics; Figures 4a and b are diagrams showing measurement examples when testing squelch sensitivity characteristics of a receiver using a programmable signal generator; Figure 5 is an example of a conventional programmable signal generator. FIG. 6 is a block diagram showing an example of variable output level by a conventional programmable signal generator. DESCRIPTION OF SYMBOLS 1... Signal generator, 2... Automatic variable gain amplifier, 3... Programmable resistance attenuator, 4... Programmable voltage generator, 5... First control means, 6
...Second control means, 10...Continuously variable command means,
12...Control unit.
Claims (1)
１と、該信号発生器１の出力信号を受けて制御電
圧に応じた出力レベルを出力する自動可変利得増
幅器２と、上記制御電圧を自動可変利得増幅器２
に供給してこの自動可変利得増幅器２の出力レベ
ルを細いステツプ△αで連続可変制御するプログ
ラマブル電圧発生器４と、上記自動可変利得増幅
器２の出力レベルをステツプ△Ｌで可変し、広帯
域に出力レベルを制御するプログラマブル抵抗減
衰器３と、を備えたプログラマブル信号発生装置
において、 上記自動可変利得増幅器２が上記プログラマブ
ル抵抗減衰器３の１ステツプ△Ｌに対して十分大
きい可変範囲を備えてなり、 さらに、上記プログラマブル抵抗減衰器３のス
テツプ動作を伴う通常の可変モードからプログラ
マブル抵抗減衰器３のステツプ動作を伴わない連
続可変モードに切換えるための指令を発する連続
可変指令手段１０と、 この連続可変指令手段１０の指令に基づいてプ
ログラマブル抵抗減衰器３の出力レベルの可変制
御を抑止して自動可変利得増幅器２の出力レベル
を上記可変範囲内でステツプ△α毎に連続可変制
御する制御部１２とを備えたことを特徴とするプ
ログラマブル信号発生装置。[Claims for Utility Model Registration] A signal generator 1 that can be controlled to a desired frequency; an automatic variable gain amplifier 2 that receives an output signal from the signal generator 1 and outputs an output level according to a control voltage; Control voltage automatic variable gain amplifier 2
and a programmable voltage generator 4 that continuously varies the output level of the automatic variable gain amplifier 2 by supplying it to the automatic variable gain amplifier 2 in narrow steps Δα, and a programmable voltage generator 4 that continuously varies the output level of the automatic variable gain amplifier 2 in narrow steps ΔL, and outputs a wide band by varying the output level of the automatic variable gain amplifier 2 in steps ΔL. A programmable signal generator comprising a programmable resistance attenuator 3 for controlling the level, wherein the automatic variable gain amplifier 2 has a sufficiently large variable range for one step ΔL of the programmable resistance attenuator 3, Further, a continuous variable command means 10 for issuing a command for switching from a normal variable mode that involves a step operation of the programmable resistance attenuator 3 to a continuous variable mode that does not involve a step operation of the programmable resistance attenuator 3; a control section 12 which suppresses the variable control of the output level of the programmable resistance attenuator 3 based on the command of the means 10 and continuously varies the output level of the automatic variable gain amplifier 2 at each step Δα within the variable range; A programmable signal generator comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5866687U JPH0535608Y2 (en) | 1987-04-20 | 1987-04-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5866687U JPH0535608Y2 (en) | 1987-04-20 | 1987-04-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63165917U true JPS63165917U (en) | 1988-10-28 |
| JPH0535608Y2 JPH0535608Y2 (en) | 1993-09-09 |
Family
ID=30889445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5866687U Expired - Lifetime JPH0535608Y2 (en) | 1987-04-20 | 1987-04-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0535608Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010219781A (en) * | 2009-03-16 | 2010-09-30 | Tamura Seisakusho Co Ltd | Head amplifier and method for controlling the same |
| JP2011199805A (en) * | 2010-03-24 | 2011-10-06 | Yamaha Corp | Level adjustment device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010011336A (en) * | 2008-06-30 | 2010-01-14 | Advantest Corp | Signal output device, signal output control method, program, and recording medium |
-
1987
- 1987-04-20 JP JP5866687U patent/JPH0535608Y2/ja not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010219781A (en) * | 2009-03-16 | 2010-09-30 | Tamura Seisakusho Co Ltd | Head amplifier and method for controlling the same |
| JP2011199805A (en) * | 2010-03-24 | 2011-10-06 | Yamaha Corp | Level adjustment device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0535608Y2 (en) | 1993-09-09 |
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