Operating Examples - Keithley 3930A Operator's Manual

SECTION2
Getting Started
'igure
2-2.
Model 3930A
Typical Connections
FCTN
out
2.5.3 Operating Examples
The following examples give step-by-step instructions
for setting basic Model 3930A operating parameters. The
Model 3930A can be connected to an oscilloscope to view
the results of the various operating examples.
Example 1: Selecting the Waveform Type (Function)
The waveform type can be selected using the FCTN key
as follows:
1. Press FCTN and note that the instrument displays
the current function and the available functions.
2. Press the number key corresponding to the desired
function (O-51, or rotate the MODIFY knob until the
desired function number is displayed. For example,
press 3 to select the square-wave function. The
waveform will immediately change to the selected
function.
3. Press DSPL to return to the normal display mode.
Example 2: Setting fhe Waveform Frequency or Period
Use FREQ to set the frequency or period of the output
wavefoml as follows:
1. Press FREQ to enter the frequency-programming
mode. The instrument will display the allowable fre-
quency range (O.lmHz to 1.2MHz for sine waves,
O.lmHz to 1OOkHz for all other waveform types).
2. To directly enter a completely new numeric fre-
quency value, key in the desired number followed
by the appropriate units key (Hz or kHz). For exam-
ple, toenter afrequencyof lO.lkHz,press: 1 0. 1kHz.
3. To simply modify an existing frequency value, place
the cursor on the digit to be changed using 4 or .,
then use the MODIFY knob to set the digit to the de-
sired value. Repeat as necessary for all digits to be
changed. Note that you can press the STEP SIZE key
to change the increment, or to multiply or divide by 2
or by 10.
4. To display the time period of the waveform fre-
quency, press the set key. You can then key in a new
time period or modify the existing period, if desired.
5. Press Hz or kHz to return to frequency display.
6. Press DSPL to return to normal display.
Example 3: Setting the Output Amplitude
Use the AMFTD key to set the output voltage amplitude
as follows:
1. Press AMPTD, and note that the instrument displays
the current amplitude and allowed amplitude range.
2. To enter a completely new amplitude value in p-p
units, key in the numeric value, then press V or mV,
as required. For example, to enter a 30mV p-p ampli-
tude, press: 3 0 mV.
3.
To simply modify the existing amplitude value, use
the cursor keys and the MODIFY knob to set the
value as required.
4. Press DSI'L to rehun to normal display.
2-5