Table of Contents
Advertisement
2
Features and Functions
Measurement Functions
The following table shows which DMM measurement functions are
supported by each of the multiplexer modules.
Note that similar considerations must be taken into account on the
34931A, 34932A, and 34933A matrix modules. Since the matrix modules
cannot be incorporated into a scan list, you must use the Stand- Alone
DMM Mode for these modules.
34921A
40-Ch Arm
MUX
Function
Voltage, AC/DC
Yes
Current, AC/DC
Yes
Frequency/Period
Yes
Ohms 2-Wire
Yes
Ohms 4-Wire
Yes
Thermocouple
Yes
RTD 2-Wire
Yes
RTD 4-Wire
Yes
Thermistor
Yes
1
Direct current measurements are allowed on channels 41 through 44 only (for all other channels, external shunts are required).
2
Optional 34921T Terminal Block is required for thermocouple measurements with built-in internal reference junction.
3
A fixed or external reference junction temperature is required for thermocouple measurement with this module.
4
Impact of higher offset voltage specification (< 50 V) must be taken into consideration.
5
1 k
or higher range used unless 100 series resistors are bypassed on module.
6
10 k
or higher range used for loads over approximately 300
Front Panel Operation: DMM or Channel (Configure) > DMM MEASUREMENT
Use the knob (or numeric keypad) to select the desired channel. Then
select the desired measurement function for this channel. You are
automatically guided to the next level of the menu where you can
configure other measurement parameters (range, integration time, etc.).
Remote Interface Operation: You can select the measurement function using
the
command configures the specified channel for dc voltage measurements.
CONF:VOLT:DC 10,DEF,(@3001)
16
34922A
34923A
70-Ch Arm
40-Ch Reed
MUX
MUX
(2-Wire)
Yes
Yes
1
No
No
Yes
Yes
Yes
Yes
Yes
Yes
2
3
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
and
CONFigure
MEASure?
34923A
34924A
80-Ch Reed
70-Ch Reed
MUX
(1-Wire)
Yes
No
Yes
5
5
Yes
5
No
3,4
3,4
Yes
5
5
Yes
5
No
5
5
Yes
due to series resistance of FET channels.
commands. For example, the following
34925A
40-Ch FET
MUX
MUX
(2-Wire)
Yes
Yes
No
No
Yes
Yes
5
6
Yes
Yes
5
6
Yes
Yes
3,4
3
Yes
Yes
5
Yes
No
5
6
Yes
Yes
5
Yes
No
34980A User's Guide
34925A
80-Ch FET
MUX
(1-Wire)
Yes
No
Yes
6
Yes
No
3
Yes
No
No
No
Advertisement
Table of Contents
