Tektronix AFG3000 - Manual (Page 162)

Syntax and Commands
3-88 AFG3000 Series Arbitrary/Function Generators Reference Manual
[SOURce[1|2]]:VOLTage:UNIT
This command sets or queries the units of output amplitude for the specified
channel. This command does not affect the offset, High level, or Low level of
output. The setting of this command is not affected by the units setting of
[SOURce[1|2]]:VOLTage[:LEVel][:IMMediate][:AMPLitude] command.
If your instrument is a dual-channel model and the
[SOURce[1|2]]:VOLTage:CONCurrent[:STATe] command is set to ON, then the
units of the other channel are set the same.
Group Source
Related Commands [SOURce[1|2]]:VOLTage:CONCurrent[:STATe]
[SOURce[1|2]]:VOLTage[:LEVel][:IMMediate][:AMPLitude]
Syntax [SOURce[1|2]]:VOLTage:UNIT {VPP|VRMS|DBM}
[SOURce[1|2]]:VOLTage:UNIT?
Arguments VPP sets the units of the output voltage to V
p-p
.
VRMS sets the units of the output voltage to V
rms
.
DBM sets the units of the output voltage to dBm. You cannot specify DBM if the
load impedance is set to infinite.
Returns VPP|VRMS|DBM
Examples SOURce1:VOLTage:UNIT VPP
sets the voltage units to V
p-p
.
Vrms
Vpp
2 2
---------- (sin)
=
dBm 10 log
10
×
P
0.001
---------------
⎝ ⎠
⎛ ⎞
= P
Vrms
2
R L
--------------- =
RL load impedance Vrms
Vpp
2 3
---------- (triangle)
=