NSN 6625-00-539-9910
Part Details | ELECTRICAL FREQUENCY METER
6625-00-539-9910 An instrument which measures the rate of regularly recurring variations in an electric current or voltage and is usually calibrated in Hertz (cycles per second or CPS). The value may be expressed by means of a pointer and calibrated dial vibrating reed or a digital read out display. For instruments which measure radio frequencies, see CALIBRATOR, FREQUENCY; and WAVEMENTER. Excludes: COUNTER ELECTRONIC DIGITAL.
Alternate Parts: ANURM81, F10636, 6625-00-539-9910, 00-539-9910, 6625005399910, 005399910
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-539-9910 | 16454 ( METER, ELECTRICAL FREQUENCY ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 6625-00-539-9910
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| ANURM81 | 80058 | JOINT ELECTRONICS TYPE DESIGNATIONSYSTEM |
| F10636 | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
Technical Data | NSN 6625-00-539-9910
| Characteristic | Specifications |
|---|---|
| FREQUENCY RESPONSE RANGE | +100.0 TO +500.0 MEGAHERTZ |
| FREQUENCY RATING | 1.0 KILOHERTZ MINIMUM AND 50.0 KILOHERTZ MAXIMUM |
| PHASE | SINGLE |
| OVERALL HEIGHT | 12.500 INCHES NOMINAL |
| OVERALL LENGTH | 19.000 INCHES NOMINAL |
| OVERALL WIDTH | 17.375 INCHES NOMINAL |
| MATERIAL | ALUMINUM |
| FURNISHED ITEMS AND QUANTITY | FREQUENCY METER FR-6/U 1,CASE METER CY- 1501/U 1,CORD CG-409/U 1,FREQUENCY DATA BOOK 1 |
| FEATURES PROVIDED | INTERNAL FREQUENCY CALIBRATING CRYSTAL |
| ENTRY DATE | 70-01-09 |
| FUNCTIONAL CLASSIFICATION | AA-6.3 |
| TYPE/MODEL DESIGNATION | AN/URM-81 |
| FUNCTIONAL DESCRIPTION | PORTABLE INSTRUMENT CAPABLE OF MEASURING ANY FREQUENCY WITHIN THE RANGE OF 100 TO 500 MHZ W/ACCURACY OF PORM 0.001 PCT. USES HETERODYNE PRINCIPLE FOR DETERMINING FREQUENCY OF AN UNKNOWN SIGNAL; MEASUREMENT IS ACCOMPLISHED BY HETERDYNING A KNOWN SIGNAL FROM THE TEST INSTRUMENT AGAINST THE UNKNOWN SIGNAL. CHECK POINTS ARE USED TO CALIBRATE THE INSTRUMENT THROUGHOUT ITS OPERATING RANGE. USED TO TEST THE FOLLOWING AVIONICS SYSTEMS: AN/AKT-18; AN/ARA-31; AN/ARC-54; AN/ARC-60; AN/ARC-73; AN/ARN-30(); AN/CRD-4; AN/TRC-68; AN/URR-35C; R-508/ARC; R-509/ARC,AND T-366()/ARC |
| REFERENCE DATA AND LITERATURE | DEPT OF ARMY PUBLICATIONS: TM11-5096 W/CHANGES 1 AND 2,OCT 55; TM11-6625-312-12P W/CHANGE 1,JUL 59; TM11-6625-312-35P W/CHANGE 2,JUL 59; TB11-6625-312-35/1 |
