Model #TF791D

Modulation meter (NSN 6625-00-060-3320)

Special Features
Direct measurement of deviation from 200 hz to 125 khz, extended down to 10 hz using external readout; modulation frequency range: 50 hz to 35 khz; crystal locking allows measurement of fm noise; built-in deviation standard ensures high accuracy
Description

18.000 inches nominal overall length, aluminum material.

Circuit Current For Which Designed
Ac
Overall Height
11.000 inches
Overall Width
13.000 inches
Scale Division Quantity
1 single indicator single range
Frequency Rating
Between 40.0 hertz and 100.0 hertz
Furnished Items And Quantity
1 coaxial free plug, type bnc
Indicator Type
Dial w/pointer
Installation Design
Bench
Frequency Response Range
+4.000 to 1024.000 megahertz
Dial Scale Marking Color
Black single indicator single range
Accuracy In Percent
-3.0 to 3.0 at full scale single indicator single range
Background Color
White single indicator single range
Pointer Color
Black single indicator single range
Power Source
External
Scale Graduation Type
Linear single indicator single range
Measurement Range
+4.0 to 1024.0 megahertz single indicator single range
Scale Selection Method
Switch
Features Provided
Internal frequency calibrating crystal
Operating Voltage Rating In Volts
Between 200.0 ac and 250.0 ac
Phase
Single
Functional Description
Direct reading fm deviation meter with calibrated carrier frequency range and 4 deviation ranges
Style Designator
D1 rectangular or square
Style Designator
Rectangular or square
Description
Meter,modulation
Cage Code
51190

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Updated: 05/04/2024