5.Panel Operation
51
Contrast
(1)
Press the front panel
Utility
function key, press the
Display
softkey.
(2)
Press the
Contrast
softkey to select
Contrast
.
(3)
Turn the
knob
to adjust the value on the current cursor, use the
/
direction key to move cursor left or right, or use the
numeric keypad
to enter
the parameter and then select % as unit. The range is from 0% to 100%
.
CH1/2 Settings
Sync
The generator can output the sync signals of basic waveforms (except noise),
arbitrary waveforms (except DC), harmonics, sweep signal, burst signal, and
modulated signal from a single channel or two channels at the same time. This sync
signal is output from the
Sync
connector at the front panel.
The steps to enable or disable sync signal at the
Sync
connector:
(1)
Press the
Utility
function key, press the
CH1/2 Set
softkey.
(2)
Press the
CH1 Sync
or
CH2 Sync
softkey,
press it again to toggle between
On
and
Off
. The default is "On", which sends the sync signal to the
Sync
connector.
When the sync signal is disabled, the output level at the
Sync
connector is logic
low.
Sync signals of various waveforms
For sine, square, ramp and pulse waves, the sync signal is a square wave
with a 50% duty cycle. When the waveform output is positive, the sync
signal is TTL high with respect to the 0V voltage (or DC offset value). When
the waveform output is negative, the sync signal is TTL low relative to the 0V
voltage (or DC offset value).
For arbitrary waveform, the sync signal is a square wave with a variable duty
cycle. When the output waveform amplitude reaches a certain value, the
sync signal is TTL high.
For harmonics, the sync signal is referenced to the harmonic order and is a
square wave with a variable duty cycle. When the output waveform
amplitude is positive, the sync signal is TTL high.
For AM, FM, PM, and PWM, for internal modulation, the sync signal is
referenced to the modulation frequency, and the sync signal is a square
wave with a 50% duty cycle. In the first half of the modulation waveform,
the sync signal is TTL high. When external modulation is performed, there is
no sync signal output.
For ASK, FSK, PSK, BPSK, QPSK, 3FSK, 4FSK, the synchronization signal is
referenced to the keying frequency, and the synchronization signal is a
square wave with a duty cycle of 50%. There is no sync signal output during
external modulation.
