2635A
Users Manual
2-8

Selecting a Channel

There are 21 channels, 0 to 20. A channel is selected for configuration or configuration
verification when the instrument is in the inactive mode. An active channel is selected
for monitoring when the instrument is in the Monitor Mode (see Figure 2-17) or Review
Mode (see Figure 2-18). Perform the procedure in Figure 2-3 to select a channel.
Restrictions
Locked Out Channels. Any channel 1 to 10 (n) assigned to four-terminal (4T)
measurements locks out a corresponding channel a decade higher (n+10). For example,
use of channel 3 for 4T measurements locks out channel 13, which can be selected, but
not configured.
Restricted Channels. Channel 0 (front panel terminals) does not support thermocouple
measurements or four-terminal measurements.
Typical
Required
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
CH Selecting a Channel. Press the up/down arrow
keys until the CH (Channel) display shows the
desired channel, for example, CH 12 (Channel
12).
op15f.eps
Figure 2-3. Selecting a Channel
Configuring a Measurement Channel
The following paragraphs provide configuration procedures for DC Volts, AC Volts,
Resistance, Frequency, Temperature, and describe how to turn a channel Off:
• Configuring a Channel to Measure DC Volts (Figure 2-4)
• Configuring a Channel to Measure AC Volts (Figure 2-5)
• Configuring a Channel to Measure Resistance (Figure 2-6)
• Configuring a Channel to Measure Frequency (Figure 2-7)