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Adjustment and test procedure Manual
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Test Equipment List
DMM Calibrator : 1 set
Decade Resistor : 1 set
DC Power Supply or 9V Battery
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Calibration Procedure
1. Power On Test
Set DM-311 to any mode by using Rotary S/W.
Check LCD display is turned on.
2. LCD Display Test
Check LCD Display to each range by selecting range with Rotary S/W. Below chart shows correct display
Function
DC VOLTAGE
AC VOLTAGE
DC CURRENT
AC CURRENT
RESISTANCE
BAT
DIODE &
CONTINUITY
3. Low Battery Warning Display Test
Check a message, "BATT" on LCD display when Power supply or Battery Voltage goes under 6.4V.
Version 1.0
LG Precision Co., Ltd.
LCD Display to each range
00.0 → .000 → 0.00 → 00.0 → 000
00.0 → .000 → 0.00 → 00.0 → 000
00.0 → .000 → 0.00 → 00.0 → 0.00
00.0 → .000 → 0.00 → 00.0 → 0.00
1 . → 1. →1 . →1 . →1. → 1 .
.000 → 0.00
1
Page 4 of 12
DM-311
99-08-26
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