HP 8340B Manual page 176

5-13. SWEEP GENERATOR, A58 (Cont'd)
RESET ERROR ADJUSTMENT
6. Connect the oscilloscope to A58TP14 (ERROR).
7. Press [INSTRPRESET] on the OUT.
8. Adjust A58R1 (RESET, Figure 5-37) for as close as possible to zero Volt average on the
oscilloscope. (See Figure 5-39.)
SWEEP GAIN ADJUSTMENT
9. Connect the DVM to A58TP4 (MKR RMP) and connect the DVM ground to A58TP9 (RGND).
10. Set the OUT controls as follows:
a. Press [INSTRPRESET]
b. Press [STARTFREQI then enter [2]
c. Press [STOPFREQ] then enter [7] [GHz]
Press [SHIFT] [MHz] [2] [3] [Hz] [SHIFT][kHz] [0] [Hz] to stop the sweep at the end of
d.
sweep (7 GHz).
11. Record the reading at on the OVM.
12. Connect the OVM to A58TP1O (VSWP).
13. Adjust A58R13 (SWP GAIN) control so that the DVM reading at A58TP1O
A58TP4 taken in step 11. EXAMPLE:
a. DVM reading
b. (0.94) (9.9884V)
c. Adjust A58R13 for OVM reading at A58TP1O of 9.38909 Volts.
14. Turn the OUT's LINE switch to STANDBY. Remove the extender board from the A58 assembly
and re-install A58.
HP 8340B/41B
Figure 5-3 9. Reset Pulse Adjusted to Zero Volt Average
[.]
step 11 at A58TP4 9.9884 Volts
in
=
9.38909 Volts
=
[3] [GHz]
94% of reading at
=
Adjustments 5-69/5-70