Keithley 2700, User Manual, Page: 176 / 500

Model 2700 Multimeter/Switch System User’s Manual Rel, Math, Ratio, Channel Average, dB 5-3
4. Press the REL key to set the rel value. The display will zero and the REL
annunciator will turn on.
5. Apply the signal to be measured.
Pressing REL a second time disables rel.
You can input a rel value manually using the mX+b function. Set M for 1 and B for any
value you want. The mX+b function is covered in this section (see
“Math,” page 5-8 ).
Scanning
When a simple scan is configured, the present rel setting will apply to all channels in the
scan. When an advanced scan is configured, each channel can have its own unique rel
setting. Details to configure and run a scan are provided in
Section 7 .
For an advanced scan, the following general procedure shows how to configure a scan
channel to use rel:
1. While in the normal measurement state, select the appropriate function and close
the appropriate channel. For example, if scan channel 101 is going to be configured
for DCV and use rel, select DCV and close channel 101.
2. Apply the DCV signal to be rel’ed to the closed channel. This could be an offset or
a baseline level.
3. Press the REL key to enable rel (REL annunciator on). The input signal level is
used as the rel value.
4. When configuring the advanced scan (as explained in Section 7 ), select the desired
channel, press DCV and then press REL (REL annunciator on).
When the channel is scanned, rel will enable using the rel value established in step 3.
For remote programming, the <clist> parameter is used to configure channels for a scan.