BE443815A - - Google Patents
Info
- Publication number
- BE443815A BE443815A BE443815DA BE443815A BE 443815 A BE443815 A BE 443815A BE 443815D A BE443815D A BE 443815DA BE 443815 A BE443815 A BE 443815A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/18—Automatic scanning over a band of frequencies
- H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
- H03J7/22—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element in which an automatic frequency control circuit is brought into action after the scanning action has been stopped
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
- H04B3/487—Testing crosstalk effects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/16—Monitoring arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US327570A US2254601A (en) | 1940-04-03 | 1940-04-03 | Automatic measuring of cross talk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE443815A true BE443815A (sh) |
Family
ID=23277096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE443815D BE443815A (sh) | 1940-04-03 |
Country Status (3)
| Country | Link |
|---|---|
| US (2) | US2254601A (sh) |
| BE (1) | BE443815A (sh) |
| FR (1) | FR876856A (sh) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2459846A (en) * | 1942-04-09 | 1949-01-25 | Int Standard Electric Corp | Voltage control arrangement |
| US2434293A (en) * | 1943-05-11 | 1948-01-13 | Sperry Gyroscope Co Inc | Frequency control of an oscillator of the velocity modulation type |
| US2434294A (en) * | 1943-10-22 | 1948-01-13 | Sperry Gyroscope Co Inc | Frequency control system |
| US2477770A (en) * | 1944-04-03 | 1949-08-02 | Cutler Hammer Inc | Electronic timing and recording means |
| US2469324A (en) * | 1945-02-09 | 1949-05-03 | Rca Corp | Circuit tuner |
| US2499514A (en) * | 1945-02-27 | 1950-03-07 | Rca Corp | Beat frequency sweep oscillator |
| US2729745A (en) * | 1951-06-05 | 1956-01-03 | Sperry Rand Corp | Sweep arrangements for servo systems |
| US3508018A (en) * | 1966-06-02 | 1970-04-21 | Us Air Force | Testing circuitry for multi-channel communication system |
| DE2017275A1 (de) * | 1970-04-10 | 1971-10-21 | Siemens Ag | Anordnung zur Messung von Fernnebensprecheigenschaften an Übertragungsleitungen |
-
0
- BE BE443815D patent/BE443815A/xx unknown
- US US22620D patent/USRE22620E/en not_active Expired
-
1940
- 1940-04-03 US US327570A patent/US2254601A/en not_active Expired - Lifetime
-
1941
- 1941-08-09 FR FR876856D patent/FR876856A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR876856A (fr) | 1942-11-19 |
| US2254601A (en) | 1941-09-02 |
| USRE22620E (en) | 1945-03-20 |