22
Figure 2-1
2.2 Ratio Measurements (DC Voltage only)
This function calculates the ratio of an input DC voltage to a reference DC voltage
according to the following equation:
※
Note: This function only applies to DC voltage measurement.
How to make a ratio measurement
There are two ways to make a ratio measurement: Through the front panel operation
or through the remote interface operation. The locations of the buttons are highlighted
in
Figure 2-2
.
Front Panel Operation
1.
Connect the test leads to the terminals on the front panel. Connect the reference
signal to the SENSE HI and LO terminals. Then connect the SENSE LO to the
INPUT LO terminal.
2.
Press DCV button to select DC voltage measurement.
3.
Press CONFIG, and then use
◁
and
▷
buttons to locate “RATIO” option.
4.
Press ENTER to select it.
5.
Connect test leads from the “INPUT HI & LO” and the “SENSE HI & LO” to your
source signal and observe readings.
※
Note: The limit of RATIO REF input is 1.2V.
※
Note: To turn off this function, please press one of the measurement function buttons.
※
Note: RAT anunciator will lit when Ratio measurement is on.
