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 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.
⚫ For OSK, the sync signal is referenced to the keyed frequency and the
sync signal is a square wave with a 50% duty cycle. When the internal
crystal oscillator starts, the sync signal is TTL high.
⚫ For N-cycle bursts, the sync signal is TTL high at the beginning of the
burst. At the end of the specified number of cycles, the sync signal is
TTL low (if the waveform has an associated Phase, it may not be a
zero crossing). For an infinite count pulse train, the sync signal is the
same as the sync signal of the continuous waveform.
⚫ For external gated bursts, the sync signal follows its gate signal. Note:
This signal does not become TTL low until the end of the last cycle (if
the waveform has an associated starting phase, it may not be a zero
crossing).
Load
For either of Out1 and Out2 connector at the front panel, the generator has a
50Ω fixed serial output impendence. If the actual load does not match the
specified value, the voltage level displayed would not match the voltage level
of the component under test. This function is used to match the displayed
voltage with the expected one.
The step to set the CH1 or CH2 load value is as follows:
(1) Press the Utility function key, press the CH1/2 Set softkey.
(2) Press the CH1 Load or CH2 Load softkey, press it again to select High Z
or * ohm ("*" represents a value, the default is 50Ω).
(3) To change the load value, after selecting * ohm, 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 unit. The load range is 1ohm to 10kohm.
Warning: Setup the correct load for right application.
Align Phase : Select Align Phase in the bottom menu to align the initial phase
To Next Page
Loading...
Need help?
General
