JPH02141133U - - Google Patents
Info
- Publication number
- JPH02141133U JPH02141133U JP4959089U JP4959089U JPH02141133U JP H02141133 U JPH02141133 U JP H02141133U JP 4959089 U JP4959089 U JP 4959089U JP 4959089 U JP4959089 U JP 4959089U JP H02141133 U JPH02141133 U JP H02141133U
- Authority
- JP
- Japan
- Prior art keywords
- signal level
- pll circuit
- received signal
- receiver
- level detector
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Superheterodyne Receivers (AREA)
Description
第１図乃び第２図は、この考案に係るＰＬＬ回
路の故障検出装置の実施例を示し、第１図はブロ
ツク図、第２図は受信信号レベルとＰＬＬ回路の
動作を示した特性図である。第３図は従来例のブ
ロツク図である。
主な符号の説明、１……受信アンテナ、２……
高周波増幅器、３……ＰＬＬ回路、４……受信信
号レベル検出器、５……受信信号レベル検出の出
力端子、６……ＰＬＬロツク検出の出力端子。
1 and 2 show an embodiment of the failure detection device for a PLL circuit according to this invention, FIG. 1 is a block diagram, and FIG. 2 is a characteristic diagram showing the received signal level and the operation of the PLL circuit. It is. FIG. 3 is a block diagram of a conventional example. Explanation of main symbols, 1...Receiving antenna, 2...
High frequency amplifier, 3... PLL circuit, 4... Received signal level detector, 5... Output terminal for receiving signal level detection, 6... Output terminal for PLL lock detection.
Claims (1)
この受信信号レベル検出器の検出信号によつてＰ
ＬＬ回路のロツクアウト動作を判断する判断手段
とで構成したことを特徴とするＰＬＬ回路の故障
検出装置。[Claims for Utility Model Registration] In locking out the PLL circuit of the receiver, a received signal level detector provided in the receiver;
By the detection signal of this received signal level detector, P
1. A failure detection device for a PLL circuit, comprising a determining means for determining a lockout operation of the LL circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4959089U JPH02141133U (en) | 1989-04-28 | 1989-04-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4959089U JPH02141133U (en) | 1989-04-28 | 1989-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02141133U true JPH02141133U (en) | 1990-11-27 |
Family
ID=31567412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4959089U Pending JPH02141133U (en) | 1989-04-28 | 1989-04-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02141133U (en) |
-
1989
- 1989-04-28 JP JP4959089U patent/JPH02141133U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH02141133U (en) | ||
| JPS63133769U (en) | ||
| JPH01115341U (en) | ||
| JPS6295347U (en) | ||
| JPH0353033U (en) | ||
| JPS5912842Y2 (en) | FM stereo receiving circuit | |
| JPH0336242U (en) | ||
| JPH0358047U (en) | ||
| JPS6344529U (en) | ||
| JPS60160639U (en) | Radio receiver switching circuit | |
| JPS6043021U (en) | Superheterodyne FM receiver | |
| JPS61107229U (en) | ||
| JPS62146339U (en) | ||
| JPS63159936U (en) | ||
| JPS5988956U (en) | radio receiver | |
| JPS6390374U (en) | ||
| JPH01151678U (en) | ||
| JPH0224630U (en) | ||
| JPS61184374U (en) | ||
| JPS648838U (en) | ||
| JPS6288987U (en) | ||
| JPS62155532U (en) | ||
| JPH01126642U (en) | ||
| JPH0244432U (en) | ||
| JPS6264039U (en) |