HP 8340B Manual page 154

5-8. YO LOOP ADJUSTMENTS (Cont'd)
IF GAIN ADJUSTMENT
8. Verify that the 50 Ohm load is still connected to W38 at the end that was connected to A49J2.
Disconnect the oscilloscope probe from A48TP1.
9. Connect the Spectrum Analyzer to A48J1.
10. Set the OUT as follows:
a. Press [INSTR PRESET]
b. Press [CW]then enter [4]
c. Connect a jumper between A59TP4 and A59TP5. (This disables the UNLK annunciator cir-
cuit.)
11. Set the Sweep Generator as follows:
a. Press [INSTRPRESEST]
b. Press [POWER LEVEL] then enter [3] [dBm]
c. Press [CW]then enter [1] [8] [6] [MHz]
d. Press [SHIFT] t hen [CW];press [STEP]keys to select
BOTTOM VIEW
HP 8340B/41B
[5] [GHz]
[.]
A48
YO LOOP
(Selected
SAMPLER
(Selected Value)
IMPEDANCE
Figure 5-19. Location of VO Loop Adjustments
1 kHz resolution.
Ri
IF GAIN
MATCH
£48
Adjustments 5-45