Section 5: Basic Digital Multimeter (DMM) Operation
Series 3700 System Switch/Multimeter User's Manual
5-28
3700S-900-01 Rev. C / July 2008
Amps measurement procedure
1. Press the
OPENALL
key
to open all switching channels. Refer to the DCV
section on how to select a DMM function, range, filter setting, and more.
NOTE
The Model 3721 switch card is the only card that supports DCI or
ACI functions. You can only assign DCI or ACI to channels 41 and
42. If DCI or ACI is assigned to Channel 1-40, error 1116 "function
mismatch in configuration" is displayed. Also, if DCV, ACV, 2W,
4W, Continuity, Temp, Freq, or Period are assigned to Channel 41
or 42, error 1114 "function mismatch in configuration" is displayed.
2. Apply the current(s) to be measured. Refer to DCV section on channel
closer, assignments, and triggering.
3. To measure other switching channels, repeat steps 5 and 6.
4. When finished, press the
OPENALL
key to open all channels.
NOTE
When an amps-only channel is closed, you cannot select a non-amps
function.
When making measurements < 1µA, to minimize 50/60Hz noise, use
a twisted pair for AMP and DMM connections.
Dry circuit testing (DRY+)
For power and low-glitch resistance measurements requiring a low open-circuit
voltage (20mV), dry circuit ohms can be used on the 1 , 10 , 100 , 1k , and
10k ranges (maximum of 2.4k ) for the 4 function. When Dry Circuit is
enabled, Offset Compensation is defaulted On.