Racal Instruments 1994 Service Manual page 64

Table
3.1
- Front Panel
Controls, Indicators,
and Connectors
(Cont*d)
Input
A
Frequency-measures
frequencies
to
160
MHz
(direct gating),
providing a
resolution of at
least 9 digits in 1 s
Input
B
Frequency
just as
FREQ A
except frequency
measurement
to
100
MHz
3-8