10
Megohmmeter Models 6528/6529
2.4 TEST Button and Function Keys
2.4.1 TEST Button
Pressing the
TEST
button starts an insulation measurement. It also serves to confirm a programmed
threshold.
• Performs battery voltage check (§3.2)
• In resistance measurement, it is used to enter/exit the DMR mode and record
the reference measurement (§3.7.1)
• Starts insulation resistance test (§3.8)
2.4.2 Function Keys
KEY
DESCRIPTION
HOLD
Freezes/unfreezes the measurement on the display. To unfreeze the display press
HOLD
key again. In
SET-UP
mode, the function of the key
HOLD
is to cycle through
parameters.
Toggle between AC+DC and DC (§3.5)
Activate/deactivate audible continuity indicator (§3.6) and insulation alarm (§3.7)
Ω
0
(short press <2s) Activate/deactivate backlight (§2.10)
Ω
0
(long press >2s) Perform lead compensation for continuity checks (§3.6.1)
SET-UP
SET-UP
(long >2s press): configure settings (§2.7)
(short press <2s): select type of insulation test (
,
, PI, DAR (Model
6529)) (§3.8)
▲
,
►
Navigate the configuration menu (§2.7)
2.5 Instrument Display
1. Indicates the measurement is on hold.
2. Indicates the Differential Mode Resistance
(DMR) or relative mode function is active in
a resistance measurement.
3. Indicates the resistance of the leads is
compensated in a continuity measurement.
4. Indicates auto-off is deactivated.
5. Indicates the remaining battery life.
6. Indicates that the measurement is within
or outside of the alarm threshold set point.
7. Indicates the presence of a hazardous voltage.
8. Indicates the alarm is active in the insulation
or DMR measurement mode.
9. Indicates the audible buzzer is activated.
10. Indicates a voltage interference in a continuity
or resistance measurement.
Ω
P
0
V
k
Ω
G
Ω
M
Ω
V%
mA
AC
+
DC
HOLD
NOISE
REL
Secondary
Display
Primary
Display
6
7
8
9
10
1
2
3
4
5
