GW Instek GFG-3015 - Manual (Page 26)

p. 22 GFG-3015
STOP
START
STOP
START
SWP CF
SYM
SOURCE
SPAN
SWP CF
SYM
Set the starting frequency by pressing button and terminate sweep
frequency by pressing + .
The start and stop frequency must be at the same sweep frequency range.
Please refer to the Note 2 for the details.
The sweep can also be done by enter Center frequency or Span frequency.
Press + for center frequency entry mode (Note 3).
Press for span frequency entry mode (Note 3).
Press to set the Duty of sweep signal (Range 90%:10%:90%).
Press to initiate sweeping.
Note: 1. Please refer to the setup of LIN and LOG Sweep as the sample below.
2. Because all frequency range (0.01Hz ~ 15MHz) of GFG-3015 are composed of
8 frequency ranges (The details as below), So the value of start and stop
frequency must be at the same sweep range.
Sweep Range
150kHz ~15MHz
15kHz ~1.5MHz
1.5kHz ~150kHz
150Hz ~15kHz
15Hz ~1.5kHz
1.5Hz ~150Hz
0.15Hz ~15Hz
0.01Hz ~1.5Hz
3. The bandwidth [SPAN] = stop frequency - start frequency
The center frequency = [(stop frequency + start frequency)/2]
The start frequency = center frequency of the sweep - bandwidth/2
The stop frequency = center frequency of the sweep + bandwidth/2
The start and stop frequencies can be freely set according to the users’
preference.
4. It won’t make any change on execution and result by taking different step
sequence.
5. GFG-3015 can output waveform synchronizing with its sweep function. In the
example of setting up LIN sweep, the Modulation output terminal will output the
waveform of triangle at 1Hz.
Example of the Setup of LIN Sweep
To set the following conditions:
Output function : Sine Wave. Start frequency : 1kHz.
Output Amplitude : 10Vpp. Stop frequency : 10kHz.
Sweep mode : LIN. Sweep signal symmetry: 50%.
Speed :1 second.
SHIFT
SHIFT
MOD/ON