Tektronix AWG610 - Manual (Page 430)

Appendix D: Sample Waveforms
D-4
AWG610 Arbitrary Waveform Generator User Manual
Table D-5: Squared sine pulse
File name SQU_SIN.WFM Made with equation editor
Equation clock = 1e9
size = 412
tmp1" = 0
size = 200
tmp2" = (cos (2 * pi * (scale - 0.5)) + 1) / 2
tmp3" = join (tmp1", tmp2")
squ_sin.wfm" = join (tmp3", tmp1")
delete (tmp1")
delete (tmp2")
delete (tmp3")
Descriptions
Settings
Waveform points: 1024, Clock frequency: 1.0 GHz,
Output time: 412 ns
Table D-6: Double exponential pulse
File name D_EXP.WFM Made with equation editor
Equation clock = 1e9
size = 10240
k1 = 50e-9
'rise time constant
k2 = 1000e-9 'fall time constant
tmp" = exp (-time / k2) - exp (-time /k1)
d_exp.efm" = norm (tmp")
delete (tmp")
Descriptions This is the waveform when a charged capacitor is discharged to the
RC circuit. When the time constants for charging and discharging are
taken to be t
1
and t
2
, respectively, the waveform can be expressed by
the following formula:
V(t)
+ exp
ǒ
–
t
t
2
Ǔ
–exp
ǒ
–
t
t
1
Ǔ
Settings Waveform points: 10240, Clock frequency: 1.0 GHz,
Output time: 10240 ns