Metek 933 - Page 176

6-32 | Model 933 UV Analyzer
Figure 6-9.
Optical Bench board
P300/P301 jumper
position vs PMT balance.
Jumper Positions
P300 P301
1 2 3 4 5 6
Higher PMT
Balance
X X X X X
X X X X
X X X X
X X X X
X X X
X X X
X X X
X X X X
X X
X X X
X X X
X X X
X X X X X
X X X X
X X X X
X X X X
X X X
X X X
X X X
X X
X X X X
X X
X X X
X X
X X X
X X X
X X
X X
Lower PMT
Balance
X X
X X

NOTE
When changing jumpers, one must be present in one of the six posi-
tions at all times.