Keysight Technologies N432A, User Manual

Page: 53 / 154

Operating Information 2
N432A User’s Guide 31
Setting the Resistance Type
Two resistance types consisting of Rmeas and Ruser can be selected, with
Rmeas as the default type.
When Rmeas is selected, an externally measured bridge resistance value
stored in EEPROM will be used. This value corresponds to the current
bridge resistance setting, and is not editable via the front panel.
When Ruser is selected, you can enter a resistance value to be used in
power measurement. The value of Ruser corresponds to the current bridge
resistance setting, with a
±
10% tolerance. If a value entered for Ruser
exceeds the
±
10% tolerance level of the bridge resistance, the value will be
clipped to the upper/lower limit within tolerance.
You can measure the value of Ruser using the following steps:
1 Set up the connections as shown in the figure below. The positive and
negative terminals of a digital multimeter (DMM) are connected to the
indicated N432A channel A input connector pin and rear panel V
RF
output connector pin respectively.
Figure 2-2 Connections for Ruser measurement
2
Set the DMM to measure resistance. The resistance value obtained is
the Ruser value.
DMM
+
-
N432 A channel A input connector N432A rear panel V
RF
output connector