TM 5-6675-319-14
u.
Reinstall circuit component A4 on card VDSF-2.
v .
Install test card lead on TP1 on card VDSF-2.
w.
Set multimeter on lowest resistance scale. Connect between pins 13 and
14 of extender board.
x .
Rotate EXP LEVEL control to minimum resistance.
NOTE
EXP LEVEL control should now be positioned between 0 and 2.0, pointing in
opposite direction from 1.0.
y .
Disconnect multimeter leads from circuit.
I n j e c t i n t o
Set %
Dodging
to
(1) 50 µ A from TP3
MAX
(2) 0.5 µ A from TP6
MIN
(3) 50 µ A from TP3
MIN
(4) No Input Current MAX
NOTE
Set
Exposure
PMT Meter
Level to Adjust
Reading
0
R46
50 µ A
2 .
0
R24
0.5 µ A
0
R21
50 µ A
2 .0
R37
0.4 µ A
Step 1 adjusts output stage of variable dodging circuit. Steps 2 and 3
match exposure level circuit to dynamic range of logging transistor A4B.
S t e p 4 s e t s l o w e r l i m i t o f o u t p u t c u r r e n t ( s c a n r a t e l i m i t ) f r o m c i r c u i t.
9-182
z . T u r n o n c i r c u i t b r e a k e r .
aa. Turn on MASTER POWER switch.
a b . A d j u s t d o d g i n g a n d e x p o s u r e l e v e l c i r c u i t s a s f o l l o w s:
T P I
