Keysight 5303B Frequency Counter Module, 500 MHz

HP/Agilent 5303B Frequency Counter Module 500 MHz
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HP/Agilent 5303B Frequency Counter Module 500 MHz HP/Agilent 5303B Frequency Counter Module 500 MHz HP/Agilent 5303B Frequency Counter Module 500 MHz
Keysight 5303B
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Datasheet

This counter module was especially designed for servicing and calibrating mobile communications equipment and AM & FM broadcast equipment. An automatic gain control (AGC) amplifier has been provided on the 80 MHz channel. This provides ease-of-use by compensating for input level variations and rejecting noise up to 50% of the peak-to-peak level of the input signal. The front end circuitry of the 525 MHz channel is fuse-protected against high input signal levels that would normally cause expensive front end damage. The addition of the battery pack makes this an ideal portable instrument for the lab or the field.
 

Specifications:

Input channel A (CW or burst)
Range: DC to 525 MHz, prescaled by 8.
Sensitivity (fixed): 100 mV rms sine wave, de to 500 MHz.
125 mV rms sine wave, 500 MHz to 525 MHz.

Signal must pass through zero.
Impedance: 50Ω
Overload protection: 5 V rms (input circuitry fuse-protected).
Input channel B (CW or burst)
Range: 50 Hz to 80 MHz, direct.
Sensitivity (automatic): 25 mV rms sine wave, 100 Hz to 50 MHz.
50 mV rms sine wave, 50 Hz to 100 Hz and 50 MHz to 80 MHz.

Sensitivity is adjusted automatically by AGC (automatic gain control). Effective up to input clipping levels of I 0 V p-p.
Impedance: I MΩ shunted by less than 40 pF.
Overload protection: 250 V rms, 50 Hz to I 0 KHz declining to 10 Vrms above 10 MHz.
Frequency measurement
Resolution: (selectable): I, 10, JOO, 1000 Hz.
Accuracy: ± I digit ± time base accuracy.