15. External Mixer Amplitude Adjustment
Adapters
Type N (f) to SMA (f)
............................................
.1250-1772
Type N (m) to BNC (f)
...........................................
.1250-1476
Type APC 3.5 (f) to APC 3.5 (f)
...................................
.5061-5311
Cables
BNC,122cm
(48in).............................................
HP 10503A
SMA,61cm
(24in)
...............................................8120-1578
Procedure
1. Set the HP 8560A
(LINE]
switch off and disconnect the power cord. Remove the analyzer
cover and reconnect the power cord.
2. Set up the equipment as illustrated in Figure 2-18. Do not connect the SMA cable to the
HP 8560A.
3. Move the WR PROT/WR ENA jumper on the A2 Controller assembly to the WR ENA
position. Set the HP 8560A luNE) switch on.
4.
On the HP 8560A, press
CNV LOSS VS
FREQ
.
(AUX)
EXTERNAL MIXER
AMPTD CORRECT , then
5.
On the HP 8560A, press
LCAL),
MORE
1
OF 2, SERVICE CAL DATA, 3RD IF AMP, and
CAL 3RD AMP GAIN. Wait until the message ADJUSTMENT-DONE appears in the active
function block.
Note
Perform the following steps only if the HP 8560A does not have Option 002.
6. Press
@
or
@
to display the conversion loss value for each frequency listed in Table 2-12.
Record any conversion loss reading not equal to 30 dB in Table 2-12 at the appropriate
frequency.
7. If all conversion loss values equal 30
dB, skip to step 8, otherwise continue to step a.
a. Refer to Table 2-12 and press
II]
or
II]
to select a frequency at which the conversion
loss value does not equal 30 dB.
b. Use the analyzer front-panel keys to set the conversion loss value to 30 dB.
c. Repeat steps a and b for all frequencies having a conversion loss value other than
30
dB.
8. Press [INSTR PRESET) on the HP 8340A/B
and set the controls as follows:
CW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310.7 MHz
POWERLEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30
dBm
2-58 Adjustment Procedures
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