Keysight E6640A, Measurement Applications User & Programmer Reference

Page: 1652 / 2870

12 Code Domain Measurement
AMPTD Y Scale
0.125 V Peak
Set the channel gain state to 0.125 Volt Peak.
Key Path
AMPTD Y Scale, I Range | Q Range
Initial S/W Revision Prior to A.02.00
Q Range Value
This is the internal gain range for the Q channel. See I/Q Gain Ranges. The Q Range only applies to Input
Path Q Only and Ind I/Q. For input I+jQ the I Range determines both I and Q channel range settings.
Key Path
AMPTD Y Scale, Range
Remote Command [:SENSe]:VOLTage:IQ:Q:RANGe[:UPPer] <voltage>
[:SENSe]:VOLTage:IQ:Q:RANGe[:UPPer]?
Example Set the Q Range to 0.5 V Peak
VOLT:IQ:Q:RANG 0.5 V
Notes The numeric entries are mapped to the smallest gain range whose break point is greater than or
equal to the value, or 1 V Peak if the value is greater than 1 V.
The Q Range is only used for Input Path Q Only and Ind I/Q. For input I+jQ the I Range determines
both I and Q channel range settings.
Couplings When Q Same as I is On, the I Range value will be copied to the Q Range and the range value keys
are disabled.
Changing the value will also set Range = Man.
Preset 1 V Peak
State Saved Saved in instrument state
Range 1 V Peak | 0.5 V Peak | 0.25 V Peak | 0.125 V Peak
Min 0.125 V
Max 1 V
Initial S/W Revision Prior to A.02.00
Remote Command [:SENSe]:POWer:IQ:Q:RANGe[:UPPer] <ampl>
[:SENSe]:POWer:IQ:Q:RANGe[:UPPer]?
Example Will set the Q Range to 0.5 V Peak when Reference Z is 50 Ω , and to 1.0 V Peak when Reference Z
is 75 Ω .
POW:IQ:Q:RANG 4 dBm
Notes The POWer form of the command is provided for convenience. It maps to the same underlying gain
range parameter as the VOLTage form of the command.
The Reference Z (not the Q channel Input Z) is used to convert the power to peak voltage, which is
then used to set the Q Range as with the VOLTage form of the command. The power values of the 4
range states (1V Peak, 0.5V Peak, 0.25V Peak, and 0.125V Peak) will vary with Reference Z. Here
1652 W-CDMA & HSPA Measurement Applications Reference