Agilent Technologies 8922 manual 12-41

Module I/O Specifications

A19 Measurement

Counter Inputs

AUDIO1_CNT J1(6) - FM Audio Analyzer 1 A3

RI_CNT J1(8)

IN_CNT J1(5) - From Input Section A23

IF_CNT J1(9) - From Global Board A9

TIME BASE REF 20 MHz J3(29)

MIXED_IF Internal

STRIG Internal

GND Internal

20 MHz Time Base Standard	The 20 MHz Sine wave drives a divide by 2 circuit
	which provides the 10 MHz reference for the counter.
Input Impedance	50 Ω
Input Level	> +5 dBm Sinewave
2nd Harmonics	< -25 dBc
IN_CNT	Input module prescaler count signal
Input Z	2.35 kΩ — .1 uF AC Coupling
Minimum input	100 mV Peak
Freq Range	10 kHz to 4 MHz
IF_CNT	Receiver Module I.F. Count
Input Z	2.35 kΩ — 100 pF AC Coupling
Minimum input	100 mV Peak
Freq	10.7 MHz
AUD1_CNT	HCMOS Vih > 4 V, Vil < 1 V
RI_CNT	HCMOS Vih > 4 V, Vil < 1 V
Maximum Count Time	25.6 μS x 216 = 1.6777216 S
Minimum Count Time	25.6 μS
Count time step size	25.6 μS
Accuracy	same as 10 MHz Ref
Gate Time Jitter	< ± 10 nS 100 mV Input
Resolution	0.01 ppm/gate time

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