Multiple-Register Counter (Mrc) Input Adjustment, Ch A - HP 5334B Service Manual

-
- -
NOTE
Do not adjust AIR133 to a level above
8
mV rms. If the setting is made at
8
mV rrns and the 53348 still counts at 4 mV rms, a problem exists in the
Input Amplifier circuitry.
5-18. MULTIPLE-REGISTER COUNTER (MRC) INPUT ADJUSTMENT, CH A
Reference: Figure 8-20
Description: The Channel A DC biasing level on the MRC input signal is optimized at two frequencies on both
the positive and negative slopes of the signal (interactive adjustment).
Figrre 5-8. MRC Ir~put AdjusflCl~artnel A Setup
f
HP8656B
SIGNAL GENERATOR
TIMEBASE I N
Equipment:
Signal Generator
.............................
HP 8656B
HP5334B
UNIVERSAL COUNTER
TIMEBASE OUT
Procedure:
B - 1
O
"
~ ~ I o ~ I
-
1.
Set the Signal Generator as follows:
Frequency
.........................................
70 M H z
Amplitude
........................................
28.0 mV +- 0.3 mV
A
m r
OUTPUT
\
2
TS22-L2
HP 5334B
-
Scrvicc Manual
5-13