HP HP34401A - SECTION 2 Measurement Procedures; How to Measure DC and AC Voltage

TAKING MEASUREMENTS
3
Figure 3. Probe/Meter placement
on the circuit to Measure Voltage
Across Resistor R
Circuit under Test
Hi
+
DMM
V
-
Lo
V
How to Measure DC and AC
Voltage
To measure a voltage, connect the probes to the HI and LO input terminals of the DMM. In
order to activate the DMM for voltage measurements, select either the AC V or DC V button
on the front panel (Figure 2).
Next, connect the leads of the probes to
the circuit in parallel with the location of
the voltage in question (Figure 3). The
Hi lead connects to the “+” (pos) part of
the circuit and the Lo to the “–“ (neg). If
these are reversed, a negative value for the
voltage is obtained.
CAUTION: Do not exceed the maximum allowable voltage input (1000V DC). Also,
never apply a voltage over the current input terminal (I) of the DMM.
Section
2
FUNCTION MATH
DISPLAY
DC I
AC I
Ω
4W
Period
dB
dBm
DC V AC V Ω 2W Freq Cont Null
Min/Max
HI
HI
LO
LO
I
V
Ω
Ω
4W Sense
Shift
Select DC V or AC V
AC or Dc Voltage
-
+
Figure 2. How to Measure Voltage