13. Sweep, DAC, and Main Coil Driver Adjustments
19.
21.
C.
d.
e.
f.
h.
i.
k.
1.
m.
n.
0.
Key in
1 (to set YTO Pretune DAC to 0).
Adjust
for DVM indication of + 10.0000 f0.0005 Vdc.
Connect DVM to
(DVM ground to
Key in
2 (to set
Pretune DAC to 4095).
After sweep has completed, adjust
for stable DVM
indication of -18.6000
Vdc.
Key in
3 (to set
Pretune DAC to 293).
After sweep has completed, adjust
Summing Amplifier
OFFSET for a stable DVM indication of -6.9010
Vdc.
Repeat steps f through i until no further adjustments are
necessary.
Key in
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
2.5
SPAN OFFSET while alternating
between
4 and
5 so that stable DVM
indication varies less than 1
Key in
4 and note stable DVM indication after sweep
has completed.
Key in
6 and note change in stable DVM indication
from previous step.
Adjust
25
SPAN OFFSET while alternating
between
4 and
6 so that stable DVM
indication varies less than 1
Jumper
GND to
and disconnect DVM from
and
Disconnect the cable 8 (grey) from All YTO Loop Assembly at
0 DET OUT.
Connect frequency counter to front-panel
LO OUTPUT as
shown in Figure 3-61.
COUNTER
Figure 3-61. YTO Main Coil Driver Adjustments Setup
Adjustments
