TFG2900A Series Function/Arbitrary Waveform Generator Users’ Guide
Suin Instruments Co., Ltd
51
3.15 Frequency List
Actually frequency list is an advanced mode of frequency sweep. In common linear or logarithmic
sweep mode, the change of frequency can only be gradually increased or decreased and sweep
speed is slower. While for frequency list mode, user can define the frequency list randomly and
sweep speed is faster. In modern communication, the frequency value of communicating carrier
can hop quickly according to the certain frequency list defined both by sender and receiver, which
also be called frequency-hopping communication. The frequency list could be changed at any time,
even the random variable frequency list could be used. Multi waveforms could be used as carrier
in frequency list mode while usually Sine is used.
3.15.1 Function Select:
Press
【
Sweep
】
key then soft key
〖
Type
〗
, and select ‘List’ to enter it’s
interface.
3.15.2 Sample Rate:
Press the soft key
〖
Sample
〗
to set the sampling rate of the frequency list.
Then loop specified frequency value of frequency list will be output according to setting sample
rate.
The sampling rate means the time used to output a frequency point during sample. The output
frequency and sampling rate of the frequency list can be expressed as follows:
List Frequency= Sample Rate
÷
List length
3.15.3 Frequency Data:
A set of frequency data is initialized when power on instrument, from
No.1 to No. 1024, each No. are assigned a frequency data from 1kHz to 1024kHz like below
shown.
NO.1
NO.2
NO.3
NO.4
…………
NO.1024
1kHz
2kHz
3kHz
4kHz
…………
1024kHz
Below table are a frequency list is composed by 10 frequency data from 100kHz to 10kHz with
step 10kHz. The following steps show you how to create this frequency list.
NO.1
NO.2
NO.3
NO.4
…………
NO.10
100kHz
90kHz
80kHz
70kHz
…………
10kHz
Press
〖
List Len
〗
soft key and set it to 10.
