9-5
IM 704420-01E
Troubleshooting and Maintenance
9
9.3
Adjusting the Zero Position of the Needle
Keys
POWER
KEY
LOCK
MEAS
SET
AVE
/T
0
2
4
4
8
6
12
8
16
10
%
deg
%
20
180
us
ms
ns
MEAS
SCALE
PRESET
PHASE
10
20
σ
σ
Procedure
1.
Check that the power switch is turned OFF.
2.
Adjust the needle by turning the adjustment trimmer
with a flat-head
screwdriver so that the needle is exactly over the zero line.
Explanation
When the zero position of the needle goes off alignment, you can adjust the needle
position using the adjustment trimmer
located at the center of the meter. View the
analog meter straight on (eye level horizontal to the zero line), and adjust so that the
needle is exactly over the zero line.
View from a
position horizontal
to the meter.
