User manual
2638A 
Users Manual 
5-2 
Input Type Selection and Range Adjustment 
The DMM menu has four softkeys available to select and configure the front-panel inputs 
for the measurement type. After a softkey is pushed, the user is prompted for additional 
input information to fully configure the input. To adjust the range of the measurement 
after the input is configured, push the and keys on the front panel to cycle through 
the available range selections. Push the  and  to adjust the NPLC setting, which 
determines the sample rate. 
Input Function Selection
Input Type and Range
hcn037.eps 
Figure 5-2. Input Function Selection 
More Functions (PT385 or PT392) 
Under More Function menu, users can configure the front-panel inputs to measure PT100 
(PT385 or PT392). 
1.  Push . 
2.  Push  to show Channel Options. 
3.  Push  to show More Functions; 
4.  Push  or  to select PT385 or PT392. 
5.  Follow the onscreen directions to complete the configuration. 
Relative Measurements 
The DMM feature has a relative function that lets the user make relative measurements. 
A relative measurement is the difference above or below a baseline measurement value. 
To make a relative measurement, a measurement is made from the front panel then the 
REL softkey is pushed (). The Product takes the measurement and freezes it as the 
baseline measurement as shown in Figure 5-3. Any measurements made after this point is 
shown as the amount above or below the baseline measurement that is referred to as the 
relative measurement value. When REL function is activated, the range is locked 
automatically. 
To make a relative measurement: 
1.  Push 
. 
2.  Configure the input. 
3.  Push  to show the channel options. 










