Quantum 9412, Manual

Page: 16 / 31

16
When set to
Positive
, the output will initially be at 0 Volts. When active, will go high for the
specified pulse width time, after which it will return to 0. The voltage level while high will de-
pend upon the load and the setting of the output voltage adjustment on the back panel.
If set to
Negative
, the output will normally be at the high voltage level. When the output is
activated, it will go to 0 Volts for the specified pulse width time, after which it will return to
the high level again.
T2 Menus
Channel 2 (T2) has some special features designed to be particularly useful when used as a
Q-switch trigger.
T2:Enable
This menu is used to separately enable or disable the output of Channel 2, independent of the
other channels. If set to
On
, Channel 2's output will be active under the same conditions as
the other channels. When set to
Off
, Channel 2's output will remain disabled under all condi-
tions.
T2:Gate
When not in External Trigger mode, the Ext/Gate input can be used to gate the output of all
output channels or just the output of Channel 2. In order to use the input to gate Channel 2,
the
GATE
selection in the Main Menu set must be set to
Off
and the
T2:Gate
selection must
be set to
Low
or
High
.
The setting of the
T2:Gate
menu is used to determine when the signal is active. If the gate
menu is set (active)
High
, Channel 2 pulses will only be generated if the Ext/Gate input signal
is greater than 3.5 Volts. If set to (active)
Low,
outputs will be enabled as long as the
Ext/Gate input signal is less than 2.0 Volts.