Keysight 34980A - Measurement Functions

Features and Functions 3
Keysight 34980A Mainframe User’s Guide 123
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.
[a] Direct current measurements are allowed on channels 41 through 44 only (for all other channels, external shunts are required).
[b] Optional 34921T Terminal Block is required for thermocouple measurements with built-in internal reference junction.
[c] A fixed or external reference junction temperature is required for thermocouple measurement with this module.
[d] Impact of higher offset voltage specification (< 50
μV) must be taken into consideration.
[e] 1 k
Ω or higher range used unless 100Ω series resistors are bypassed on module.
[f] 10 kΩ or higher range used for loads over approximately 300Ω due to series resistance of FET channels.
Measurement
Function(s)
34921A
40-ch
Arm
Mux
34922A
70-ch
Arm
Mux
34923A
40-ch
Reed
Mux
( 2 - W i r e )
34923A
80-ch
Reed
Mux
(1-Wire)
34924A
70-ch
Reed
Mux)
34925A
40-ch
FET
Mux
(2-Wire)
34925A
80-ch
FET
Mux
(1-Wire)
Voltage, AC/DC Yes Yes Yes Yes Yes Yes Yes
Current, AC/DC
Yes
[a]
No No No No No No
Frequency/Period Yes Yes Yes Yes Yes Yes Yes
Ohms 2-Wire Yes Yes
Yes
[e]
Yes
[e]
Yes
[e]
Yes
[f]
Yes
[f]
Ohms 4-Wire Yes Yes
Yes
5
No
Yes
[e]
Yes
[f]
No
Thermocouple
Yes
[b]
Yes
[c]
Yes
[c],[d]
Yes
[c],[d]
Yes
[c],[d]
Yes
[c]
Yes
[c]
RTD 2-Wire Yes Yes
Yes
[e]
Yes
[e]
Yes
[e]
No No
RTD 4-Wire Yes Yes
Yes
[e]
No
Yes
[e]
Yes
[f]
No
Thermistor Yes Yes
Yes
[e]
Yes
[e]
Yes
[e]
No No