Part Details | ELECTRICAL FREQUENCY METER
6625-00-649-4286 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: ANURM80, MILF11069, 6625-00-649-4286, 00-649-4286, 6625006494286, 006494286
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-649-4286 | 16454 ( METER, ELECTRICAL FREQUENCY ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 6625-00-649-4286
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| ANURM80 | 80058 | JOINT ELECTRONICS TYPE DESIGNATIONSYSTEM |
| MILF11069 | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
Technical Data | NSN 6625-00-649-4286
| Characteristic | Specifications |
|---|---|
| FREQUENCY RESPONSE RANGE | +10.0 TO +100.0 MEGAHERTZ |
| FREQUENCY RATING | 50.0 HERTZ MINIMUM AND 1.0 KILOHERTZ MAXIMUM |
| PHASE | SINGLE |
| OVERALL HEIGHT | 18.500 INCHES NOMINAL |
| OVERALL LENGTH | 21.000 INCHES NOMINAL |
| OVERALL WIDTH | 14.250 INCHES NOMINAL |
| MATERIAL | ALUMINUM |
| FURNISHED ITEMS AND QUANTITY | CASE 1,CORD 1 |
| FEATURES PROVIDED | INTERNAL FREQUENCY CALIBRATING CRYSTAL |
| ENTRY DATE | 70-01-09 |
| FUNCTIONAL CLASSIFICATION | AA-6.3 |
| TYPE/MODEL DESIGNATION | AN/URM-80 |
| FUNCTIONAL DESCRIPTION | PORTABLE INSTRUMENT CAPABLE OF MEASURING ANY FREQUENCY WITHIN THE RANGE OF 10 TO 100 MHZ W/AN ACCURACY OF PORM 0.001 PCT. USES THE HETERODYNE PRINCIPLE FOR DETERMINING THE FREQUENCY OF AN UNKNOWN SIGNAL; MEASUREMENT IS ACCOMPLISHED BY HETERODYNING 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/ARC-44; AN/ARC-45; AN/ARC-54; AN/ARC-60; AN/ARC-73; AN/ARN-32; AN/FRC-15; AN/TRC-68; AN/URC-35C; R-508/ARC,AND R-509/ARC |
| RELATIONSHIP TO SIMILAR EQUIPMENT | INTERCHANGEABLE WITH NSN 6625-00-553-8412 |
| REFERENCE DATA AND LITERATURE | DEPT OF ARMY PUBLICATIONS; TM11-5095 W/CHANGES 3,4,5,OCT 55; TM11-6625-284-20P,NOV 59; TM11-6625-284-35P,NOV 59; TB11-6625-284-35/1,NOV 59 |