Keysight E6640A, Measurement Applications User & Programmer Reference

Page: 1651 / 2870

12 Code Domain Measurement
AMPTD Y Scale
Example Set the I 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: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 I channel Input Z) is used to convert the power to peak voltage, which is
then used to set the I 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
are some examples:
50 Ω : 10, 4, –2, –8
75 Ω : 8.2, 2.2, –3.8, –9.8
600 Ω : –0.8, –6.8, –12.8, –18.9
Preset 10.0 dBm
Range –20 dBm to 10 dBm
Min –20 dBm
Max 10 dBm
Initial S/W Revision Prior to A.02.00
1 V Peak
Set the channel gain state to 1 Volt Peak.
Key Path
AMPTD Y Scale, I Range | Q Range
Initial S/W Revision Prior to A.02.00
0.5 V Peak
Set the channel gain state to 0.5 Volt Peak.
Key Path
AMPTD Y Scale, I Range | Q Range
Initial S/W Revision Prior to A.02.00
0.25 V Peak
Set the channel gain state to 0.25 Volt Peak.
Key Path
AMPTD Y Scale, I Range | Q Range
Initial S/W Revision Prior to A.02.00
W-CDMA & HSPA Measurement Applications Reference 1651