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SECTION3
Operation
4-
(DC
offset value adjustment)
MODE
(Oscillation mode)
This key allows you to choose the oscillation
mode. Available modes include: CONT (con-
tinuous oscillation), BURST (burst oscillation),
TRIG
(trigger oscillation),
GATE
(gate oscilla-
tion). In addition, it
is
also possible to select
DC
for a continuous output of direct current voltage.
Rotating the
DC
offset value adjustment knob
sets the programmed offset voltage. The allow-
able
DC
offset to be added to a waveform
is
be-
tween -10V and
i f
OV.
DC
OFFSET
ON,
OFF
Push-button key to select whether or not
DC
off-
set is added to the waveform. When LED in cen-
ter of
the
key
is
lit offset
is
selected-Use the
+/-
offset value adjustment knob to add the deter-
mined amount of offset to the waveform.
MODE
(Displays the selected mode)
Refer to the lit
LED
to see which mode has been
selected.
MAN W n u a l trigger kerj)
AMPTD Mmplitude range display)
LEDs light to display the selected amplitude
range. The allowed amplitude range
is
from
2mVp-p to 20Vp-p. The values for the amplitude
setting are for no-load (open) output condi-
tions.When the output
is
terminated with a 50Q
terminal resistor, amplitude range
is
one half of
the selected range.
This
key allows the operator to manually gener-
ate a trigger input pulse during trigger or gate
mode of oscillation.
TRIG
IN Crriaer input)
This BNC
connector
is
an input for external
'ITL-
level signals, which can be used to trigger the
Model 3910 in
TRIG
(ttigger) and
GATE
modes
of operation. When this input goes from high
level to low level, it operates
as
a trigger s i g n a l .
V(Amplitude range down
key)
When the down cursor key
is
pressed the maxi-
mum value of the amplitude output signal is
re-
duced.
SYNC OUT (Synchronous output)
This BNC jack provides a TIZ-level signal at the
same
frequency as the FCTN
OUT
output
waveform.
A
(Amplitude range up
key)
When the up cursor key
is
pressed the maximum
value of the amplitude output signal
is
in-
creased.
AMPTD MIN, MAX (Amplitude adjusbnent)
Turning
this
knob allows you to set the output
amplitude of the unit when the FClW OUT key
has been activated. The allowed amplitude
ranges from 2mVp-p to 20Vp-p.
FCTN
(Function: waveform)
T h i s
key allows you to choose the ou
waveform. Available waveforms include
:
(sine wave),
(triangular wave),
rL!
(s uarc
wave), v(ascending sawtooth wave),
3
(de-
scending sawtooth wave).
FCTN OUT
ON,
O F F
(Signal o
ttfpii
t ONOFF)
FCTN OUT
turns
the output waveform off or on
to the
BNC
plug of
FCTN OUT.
When the output
i s
off,
the
main output signal is turned off and
open-circuited.
T h i s
can be shorted to ground by
switching an internal short plug. The current
status
of this key can be determined by the LED
in the center of the key. If lit, FCTN
OUT
is
on.
The selected waveform is displayed in the func-
tion LEDs.
FCTN
(Displays the selected function)
Refer to the lit
LED
to see which wave function
has been
selected.
FCTN
OUT
(Function oaitput: wavefonn
output)
?his
BNC
jack provides the waveform output
signal. The maximum output voltage range is
?20Vp-p/open circuit, and the output imped-
ance is 50Q.
REMOTE
(Remote state display)
T h i s
lamp indicates the remote state when the
GPIB
option
is
installed and listener
is
specified
from
the
controller.
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