Getting Started
1
Keysight U1401B User’s and Service Guide
25
The rotary switch at a glance
Before powering on the U1401A, set the slide switch to
M
or
M/S
position. To
switch on the U1401A, turn the rotary switch to the desired function. The input
and output functions are selected together. The outer circle indicates the
output
(
source
) function while the inner circle indicates the
input
(
meter
) function.
Figure 1-3
The rotary switch
1
2
3
4
5
6
Table 1-3
Rotary switch positions and their corresponding functions
No.
Description/Function
Input (white)
Output (orange)
1
OFF
—
2
DC, AC, or AC+DC voltage measurements
– Square wave output
– Constant current: ±25 mA
– Constant voltage: ±1.5 V, ±15 V
3
DC, AC, or AC+DC mV measurements or temperature
measurement
Constant voltage: ±1.5 V, ±15 V
4
Resistance measurement and continuity test
Constant voltage: ±1.5 V, ±15 V
