Attenuator Adjustment - HP 5334B Service Manual

10. Increment the Signal Generator amplitude in 0.3 mV rms steps until Counter displays a stable frequency
count.
a
11. Set the Signal Generator frequency to 104 MHz.
12. Adjust AIR131 (CH B) for a 5334B front panel display of 104.000 000 MHz
+
4 Hz at both the positive and
negative slope settings. If this adjustment is not possible, repeat steps 10 through 12 until this adjustment is
completed and then continue with step 13.
13. Set the Signal Generator frequency to 70 MHz.
14. Adjust AIR131 (CH B) for a 5334B front panel display of 70.000 000 MHz
+
4 Hz at both the positivc and
negative slope settings. If this adjustment is not possible, repeat steps 10 through 14 until this adjusimcnt is
completed and then continue with step 15.
15. Set the Signal Generator frequency to 70 MHz and amplitude to 28.0 mV
+
0.3 mV.
NOTE
For 53348 instruments equipped with Option 060, set Signal Generator
amplitude to 40.0 mV
+
0.4 mV.
16. Verify that the 5334B front panel displays 70.000 000 MHz
t
4 Hz at both the positive and ncgativc slope
settings.
17. Set the Signal Generator frequcncy lo 104 MHz and the amplitude to 28.0 mV
+
0.3 mV.
NOTE
For 5334B instruments equipped with Option 060, set Signal Generator
amplitude to 40.0 mV +- 0.4 mV.
18. Verify that the 5334B front panel displays 104.000 000 MHz -+ 4 I-lz at both thc posilive and ncgativc slope
settings.
5-20. ATTENUATOR ADJUSTMENT
Reference: Figure 8-20
Description: The Channcl
A
and B attcnuators are adjusted for low frcqucncy applications.
H P 5334B
-
Scrvicc Manual
5-17