JPS5720045A - Testing circuit of receiver - Google Patents
Testing circuit of receiverInfo
- Publication number
- JPS5720045A JPS5720045A JP9434980A JP9434980A JPS5720045A JP S5720045 A JPS5720045 A JP S5720045A JP 9434980 A JP9434980 A JP 9434980A JP 9434980 A JP9434980 A JP 9434980A JP S5720045 A JPS5720045 A JP S5720045A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- output
- tested
- integrated
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
Abstract
PURPOSE:To achieve an excellent test by decreasing the man-hours of testing and shortening a test time by excluding an error when integrated circuits in receivers to be tested are different by setting an input signal frequency by utilizing the output of a local oscillator of equipment to be tested. CONSTITUTION:To the inut terminal 4 of an integrated circuit 3 for a radio receiver to be tested, the output terminal 2 of a high-frequency test signal generator 1 is connected and the mixing circuit 10 of the circuit 3 mixes an oscillation signal from the modulating circuit 8 of the generator 1 and a signal from the local oscillating circuit 11 together to supply an IF signal to an IF amplifying circuit 12, thereby testing characteristics of the radio receiver. This generator 1 is provided with a mixing circuit 15 which mixes a reference signal from a reference signal oscillating circuit 16 connected to a quartz oscillator and a signal led out of the oscillating circuit 11 of th integrated circuir 3 by a tuning circuit 13, and the mixture output of this circuit 15 is applied to the modulating circuit 8. Then, the output frequency of the oscillating circuit 11 is utilized to exclude errors due to a difference of the integrated circuit 3, thereby decreasing the man-hours of testing and shortening a test time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9434980A JPS5720045A (en) | 1980-07-10 | 1980-07-10 | Testing circuit of receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9434980A JPS5720045A (en) | 1980-07-10 | 1980-07-10 | Testing circuit of receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5720045A true JPS5720045A (en) | 1982-02-02 |
Family
ID=14107800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9434980A Pending JPS5720045A (en) | 1980-07-10 | 1980-07-10 | Testing circuit of receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5720045A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004040785A1 (en) * | 2002-10-29 | 2004-05-13 | Niigata Seimitsu Co., Ltd. | Receiver |
| US7269404B2 (en) | 2003-07-28 | 2007-09-11 | Sharp Kabushiki Kaisha | Radio-frequency receiving apparatus |
-
1980
- 1980-07-10 JP JP9434980A patent/JPS5720045A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004040785A1 (en) * | 2002-10-29 | 2004-05-13 | Niigata Seimitsu Co., Ltd. | Receiver |
| US7269404B2 (en) | 2003-07-28 | 2007-09-11 | Sharp Kabushiki Kaisha | Radio-frequency receiving apparatus |
| CN100361402C (en) * | 2003-07-28 | 2008-01-09 | 夏普株式会社 | Radio-frequency receiving apparatus |
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