75
How to set the reference resistance
User can set the reference resistance either through the front panel operation or the
remote
interface operation.
Front Panel Operation
1.
Select a measurement function by pressing DCV or ACV button.
2.
Do the procedure SHIFT + NULL > dBm > ENTER > REL RES to access the setting
as shown in
Figure 3-28
.
3.
Use
◁
and
▷
to move through the digits and
△
and
▽
buttons to increase or
decrease the numbers to your desired value. Press ENTER to set the value.
4.
Press ENTER on “RUN” to start measurement.
Figure 3-28
※
Note:To disable the dBm function, you always need to go to Math submenu and
select “OFF” or press other measurement buttons. The
“
MATH” annunciator
should not be lit when disabled.
Remote Interface Operation
Use the following commands to enable dBm feature or to set the reference resistance:
CALCulate:FUNCtion DBM
CALCulate:STATe {OFF|ON}
CALCulate:STATe?
CALCulate:DBM:REFerence {<
value
>|MINimum|MAXimum}
