HP 1652B Getting Started Manual page 124

You can select your desired threshold by rotating the KNOB until your
desired threshold voltage is displayed. Rotating the KNOB increments
or decrements the value in small steps. Or you can change the value
with the keypad. It allows you to make large value changes quickly.
Entering the new value from the keypad replaces the previous value.
If you want a negative voltage for the threshold, press the CHS (change
sign) key on the front panel. The minus (0) sign will appear in the
POP-UP*
Notice, the cursor stays in the upper right comer of the pop-up over
Done. When you press SELECT, the pop-up will close and your new
threshold will be placed in the Pod field.
In another type of numeric entry pop-up menu you must specify the
units as well as the numeric value. The pattern duration specification in
the Timing Trace Specification menu is an example. When you place
the cursor on the value in the
present for
field and press
SELECT, you will see the following pop-up:
Tiring frrce Speclf lcstlon
Acqulsltlon mode 1 Tmstttonal ]
*-
Lab.1 >
Bate )
Find
Pat tern
pf 080
Than 1 Ind
Eclgo
mt for
1 ..*. ]
-tic Entry
0
c
(30) g
US
0
nr
Figure 3-7. Numeric Entry Pop-up
You
enter a new value from the keypad. When you have entered your
desired value, you can change the units (i.e., ns,/cs, ms, s) by rotating
the KNOB.
Once you select the new value and the units, close the pop-up by
pressing
SELECT.
The new value and the units will be displayed in the
present for
field.
HP 16528/1653B
Using the Front-Panel User Interface
Front-Panel Reference
3-13