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13
Utility
The signal generator allows the user to configure channel parameters, configure remote
interfaces, and set system parameters.
13.1
Sync
The synchronous signal is output from the [FSK/Trig/Sync/Extmod] connector on the
rear panel. The instrument could output the sync signals of basic waveforms (except
Noise), arbitrary waveforms (except DC), Harmonics, Sweep, Burst and Modulation
from a single channel or two channels at the same time.
⚫
The sync signal is a square waveform that is "high" in the first half of the cycle and
"low" in the second half. When sync signal is disabled, the output level at the
[FSK/Trig/Sync/Extmod] connector is logic low.
⚫
The amplitude of Sync signal is not adjustable and is fixed at TTL level.
Sync Signals of Various Waveforms
⚫
For Sine, Square, Ramp, and Pulse, the sync signal is a Square with 50% duty
cycle. When the first wave point is output, the synchronization signal is TTL high
level. When the frequency of the basic waveform is less than or equal to 30 MHz,
the sync signal has the same frequency as the basic waveform. When the
frequency of the basic waveform is greater than 30 MHz, the frequency of the sync
signal is (the basic waveform frequency ÷2
dividing coefficient, and it is 1 when the frequency of the basic waveform is greater
than 30 MHz and less than or equal to 60 MHz, and it is 2 when the frequency of
the basic waveform is greater than 60 MHz and less than or equal to 90 MHz.
⚫
For noise, there is no sync signal output.
⚫
For arbitrary waveform, the sync signal is a square with 50% duty cycle. When the
first wave point is output, the sync is TTL high level. The frequency of the sync
signal is the frequency of arbitrary waveform.
⚫
For harmonics, the sync signal is a square with 50% duty cycle. When the first
waveform point is output, the sync signal is TTL high level. The frequency of the
sync signal is the frequency of the basic wave.
⚫
For AM, DSB-AM, FM, PM and PWM modulation, when internal modulation source
is selected, the sync signal is a square with 50% duty cycle and takes modulating
frequency as reference. When the first waveform point is output, the sync signal is
TTL high level. When external modulation source is selected, there is no sync
signal output.
⚫
For ASK, FSK, PSK, BPSK, QPSK, 3FSK, 4FSK, OSK modulation, the sync signal
is a square with 50% duty cycle and takes the modulating rate as reference. For
ASK, FSK, PSK, OSK modulation, when external modulation is selected, there is
no sync signal output.
⚫
For Sweep, when the frequency of the sweep signal is less than the mark
Copyright © Qingdao Hantek Electronics Co., LTD
n
). Wherein, n represents the frequency
HDG3000B User manual
Utility
71
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