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1. SEL Button
Selects the parameter (A, W, V) whose peak is to be measured.
2. MEM Button
Accesses two functions:
•
Memory
•
Measurements of differences in voltage, current and active power
between stored values and subsequent readings.
3. ON/OFF Switch
Turns the instrument ON or OFF. The Model 3910 takes a few sec-
onds to power up when turned "ON".
4. Clamp Input
FRB socket for connecting the clamp-on current probe. Use only
specified current probes, which have a voltage output (1mV
5. Display
LCD (40x50mm), displays the seven measurements on two pages.
NOTE: A beep sounds when the PAGE, PEAK, SEL or MEM button
is pressed.
6. PEAK Button
Selects "PEAK" measurement mode.
7. PAGE Button
Displays Vrms, Arms, W, PF (or Cos Φ) on page 1 automatically;
pressing PAGE gives access to Var, VA and Hz on page 2.
8. 1Ø / 3Ø
Selects the type of network to be tested.
•
1Ø: single-phase
•
3Ø: balanced three-phase, three-wire
9. Voltage Inputs
Two safety input terminals (4mm) for lead connection. Voltage mea-
surement may be made up to 600V
/
.
AC
DC
TRMS Power Meter Model 3910
/A
).
AC
AC
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