JPS6338075U - - Google Patents
Info
- Publication number
- JPS6338075U JPS6338075U JP13075486U JP13075486U JPS6338075U JP S6338075 U JPS6338075 U JP S6338075U JP 13075486 U JP13075486 U JP 13075486U JP 13075486 U JP13075486 U JP 13075486U JP S6338075 U JPS6338075 U JP S6338075U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- vco
- processor
- control voltage
- output
- 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
- 238000001228 spectrum Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Superheterodyne Receivers (AREA)
Description
第１図は本考案に係るスペクトラムアナライザ
の構成例を示した図、第２図は本考案の別の構成
例を示した図、第３図はＣＲＴに表示されるスペ
クトラム波形の例を示した図、第４図は鋸歯状波
を示した図、第５図は従来のスペクトラムアナラ
イザの構成例を示した図である。
１……ローパスフイルタ、３……ミキサ、５…
…ＶＣＯ、９……ＢＰＦ増幅器、２０……ＣＲＴ
、３０……スイツチ、３１……ＤＡ変換器、３３
……プロセツサ、３４，４１……ＡＤ変換器、３
６……可変分周器、３７……位相検出器、３９…
…ループフイルタ、４０……基準周波数発振器、
５０……コンパレータ。
Figure 1 shows an example of the configuration of a spectrum analyzer according to the present invention, Figure 2 shows another example of the configuration of the invention, and Figure 3 shows an example of a spectrum waveform displayed on a CRT. FIG. 4 is a diagram showing a sawtooth wave, and FIG. 5 is a diagram showing an example of the configuration of a conventional spectrum analyzer. 1...Low pass filter, 3...Mixer, 5...
...VCO, 9...BPF amplifier, 20...CRT
, 30... switch, 31... DA converter, 33
... Processor, 34, 41 ... AD converter, 3
6... variable frequency divider, 37... phase detector, 39...
...Loop filter, 40...Reference frequency oscillator,
50...Comparator.
Claims (1)
とＶＣＯの出力信号をミキシングするミキサ３と
、このミキサ３の出力を導入しバンドパスフイル
タを備えたＢＰＦ増幅器９と、を具備し、ＣＲＴ
上に入力信号の周波数スペクトラム波形を表示す
る装置において、 装置各部の制御を行なうプロセツサと、 このプロセツサから加えられた設定信号をアナ
ログ信号に変換し、この信号を制御電圧としてＶ
ＣＯへ加えるＤＡ変換器３１と、 ＶＣＯの制御電圧―出力周波数特性を測定する
手段と、 を備え、この測定値を用いて、プロセツサにてデ
ータを取込むべき周波数に相当するＶＣＯの制御
電圧を設定し、その時のレベル信号を読取るよう
にしたことを特徴とするスペクトラムアナライザ
。[Claims for Utility Model Registration] A VCO, a mixer 3 that mixes an input signal passed through a low-pass filter and an output signal of the VCO, and a BPF amplifier 9 that introduces the output of this mixer 3 and is equipped with a band-pass filter. Equipped with CRT
In a device that displays the frequency spectrum waveform of an input signal on the top of the screen, there is a processor that controls each part of the device, and a setting signal applied from this processor that is converted into an analog signal, and this signal is used as a control voltage at V.
It is equipped with a DA converter 31 to be applied to the CO, and a means for measuring the control voltage-output frequency characteristic of the VCO, and using this measurement value, the control voltage of the VCO corresponding to the frequency at which data should be taken in by the processor is determined. A spectrum analyzer characterized by being configured to set and read the level signal at that time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13075486U JPH0611481Y2 (en) | 1986-08-27 | 1986-08-27 | Spectrum analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13075486U JPH0611481Y2 (en) | 1986-08-27 | 1986-08-27 | Spectrum analyzer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6338075U true JPS6338075U (en) | 1988-03-11 |
| JPH0611481Y2 JPH0611481Y2 (en) | 1994-03-23 |
Family
ID=31028556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13075486U Expired - Lifetime JPH0611481Y2 (en) | 1986-08-27 | 1986-08-27 | Spectrum analyzer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0611481Y2 (en) |
-
1986
- 1986-08-27 JP JP13075486U patent/JPH0611481Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0611481Y2 (en) | 1994-03-23 |
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