3156B User Manual
WaveCAD 4-8
Racal Instrument © 2005
Note
Normal color of the digital reading is dark blue. If you
modify the reading, the color changes to a lighter shade of
blue, indicating that the 3156B has not been updated yet
with the new parameter. Pressing Execute will update the
instrument and will restore the color of the digital readout
to dark blue, indicating that the displayed value is the
same as the generator setting.
Also note that the digital readout has an autodetect
mechanism for the high and low limits. You cannot exceed
the limits if you are using the dial but only if you use the
keypad. In case you do, the program will not let you
download an illegal parameter and you’ll be requested to
correct your setting.
Wave Mode
The Wave Mode group is used for selecting between waveform types.
The 3156B provides six types of waveforms: Standard, Arbitrary,
Sequenced, Modulated, Video and Digital. By pressing one of these
buttons output waveform will change to the selected option. The
default waveform type is Standard. If you want to change standard
waveform parameters, you can select this panel from the Panels bar.
Run Mode
The Run Mode group is used for selecting the active run mode for the
instrument. You can select between continuous, triggered, gated and
burst modes. There is no additional panel associated with the
continuous mode, but if you press one of the other run mode options,
you’ll be able to adjust the trigger parameters from the Trigger Panel.
SYNC Output
The SYNC Output group controls SYNC type and state. The SYNC
output is enabled when the State button is ON. The SYNC Type
toggles between Pulse and “0” Cross. In Sequenced wave mode, the
SYNC output automatically reverts to LCOM (loop Complete) output.
Output
The Output group is used for controlling the state of the 3156B
channel 1 and 2 outputs and allows selection of the enable source. It
also provides access to software enable commands. The default
Operate Enable source is Software and therefore, if the output state is
on, clicking on the operate Enable button will stimulate the output.
