HP 3438A Operating And Service Manual page 15

Section I11 Model 3438A
3-20.
DC Current Measurements.
3-22.
AC Current Measurements.
The current function is protected by a fuse of
250
V
rating. To avoid damage to the
Multimeter, current sources having open
circuit voltages greater than 250
V
(dc +peak
ac) must not be connected to the A (amps)
input terminal.
The current function is protected by a fuse of
250 V rating. To avoid damage to the
Multimeter, current sources having open
circuit voltages greater than 250
V
(dc +peak
ac) must not be connected to the A (amps)
inpur rerminal.
3-21. Procedure: 3-23. Procedure:
a. Depress
---
mA (dc milliamperes). a. Depress
-
mA (ac milliamperes).
b. Depress proper manual range (200pA to 2000 mA).
b. Depress proper manual range (200p to 2000 mA).
c. Connect test leads from the Multimeter A and
c. Connect test leads from the Multimeter A and
C O M terminals in series with the current under test as
C O M terminals in series with the current under test as
shown in Figure 3-6. shown in Figure 3-7.
\
\
AC
34661
-
8 - 1 0
CURRENT
SOlRCE
Figure 3-7. AC Current Measurements.
3 4