Agilent Technologies HP 8566B Spécifications Page 260

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13. Sweep, DAC, and Main Coil Driver Adjustments
YTO
Main
Coil
Driver
19.
Adjustments
(Preferred Procedure)
20.
21.
C.
d.
e.
f.
8.
h.
i.
.i.
k.
1.
m.
n.
0.
P.
Key in
@Z?XiYj
1 (to set YTO Pretune DAC to 0).
Adjust
A19R50
for DVM indication of + 10.0000 f0.0005 Vdc.
Connect DVM to
A19TP2
(DVM ground to
A19TP3).
Key in
[RECALL]
2 (to set
YT.0
Pretune DAC to 4095).
After sweep has completed, adjust
A19R9
for stable DVM
indication of -18.6000
f0.0005
Vdc.
Key in
[RECALL_)
3 (to set
YTO
Pretune DAC to 293).
After sweep has completed, adjust
A19R19
Summing Amplifier
OFFSET for a stable DVM indication of -6.9010
f0.0005
Vdc.
Repeat steps f through i until no further adjustments are
necessary.
Key in
(ml
4 and note stable DVM indication after sweep
has completed.
Key in (RECALL) 5 and note change in stable DVM indication
from previous step.
Adjust
A19R56
2.5
GHz
SPAN OFFSET while alternating
between
(RECALL_)
4 and
(m)
5 so that stable DVM
indication varies less than 1
mVdc.
Key in
[RECALL)
4 and note stable DVM indication after sweep
has completed.
Key in
(jj]
6 and note change in stable DVM indication
from previous step.
Adjust
A19R41
25
GHz
SPAN OFFSET while alternating
between
(RECALL)
4 and
[Wj
6 so that stable DVM
indication varies less than 1
mVdc.
Jumper
A20TP5
GND to
A21TP2
and disconnect DVM from
A19TP2
and
A19TP3.
Disconnect the cable 8 (grey) from All YTO Loop Assembly at
AllJl
0 DET OUT.
Connect frequency counter to front-panel
1ST
LO OUTPUT as
shown in Figure 3-61.
FREOUENCY COUNTER
ADAPTER
i-
Figure 3-61. YTO Main Coil Driver Adjustments Setup
3-120
Adjustments
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