NF wf1966, Instruction Manual

Page: 98 / 198

4.2 Sweep
4-36
WF1966
„
Sweep (Modulation) steps and step width
Sweep and modulation outputs are changed by software. Methods for estimating sweep, modulation step
number (number of output changes between start and stop values) and step width (variation width per
change) are indicated below.
Sweep is described here. For modulation, replace sweep function with modulation waveform, sweep type
with modulation type, and sweep time with modulation period, respectively.
The modulation period is determined as follows.
When the waveform is SIN, , , : Modulation period = 1
÷
(Modulation frequency
×
2)
When the waveform is , : Modulation period = 1
÷
Modulation frequency
• Step number derivation ( when oscillation mode of only one channel is sweep or modulation. Other
times, see next page. )
(1) Sweep function is step ( ):
Step number = Sweep time [s]
×
10000 (raise up, even number *1)
(2) Sweep function is other than step and sweep type is frequency:
①
Sweep time is 25 ms and below:
Step number = Sweep time [s]
×
10000
②
Sweep time is more than 25 to 31.25 ms and below:
Step number = 250 (fixed)
③
Sweep time is more than 31.25 ms:
Step number = Sweep time [s]
×
8000
(3) Sweep function is other than step and sweep type is other than frequency:
①
Sweep time is 50 ms and below:
Step number = Sweep time [s]
×
10000
②
Sweep time is more than 50 to 62.5 ms and below:
Step number = 250 (fixed)
③ Sweep time is more than 62.5 ms:
Step number = Sweep time [s]
×
8000
*1: If raising up results in odd number, -1.