Keysight E6640A, Measurement Applications User & Programmer Reference

Page: 1647 / 2870

12 Code Domain Measurement
AMPTD Y Scale
Long Demod View Symb Power Window Y Ref Value
Sets the absolute power reference value for the code domain power view of the Demod Bits (Long mode)
function in the CDP window.
Key Path
AMPTD Y Scale
Mode WCDMA
Remote Command :DISPlay:CDPower:VIEW6:WINDow[1]:TRACe:Y[:SCALe]:RLEVel <real>
:DISPlay:CDPower:VIEW6:WINDow[1]:TRACe:Y[:SCALe]:RLEVel?
Example DISP:CDP:VIEW6:WIND:TRAC:Y:RLEV 1.0
DISP:CDP:VIEW6:WIND:TRAC:Y:RLEV?
Notes Target window to control depends on the SubOpCode.
Couplings When "Auto Scaling" on page 1663 is set to On, this value is automatically determined by the
measurement result. When you set this value manually, Auto Scaling automatically changes to Off.
Preset 0.00
State Saved Saved in instrument state.
Min –250.0
Max 250.0
Initial S/W Revision Prior to A.02.00
Range
This key is only available when I/Q is the selected input. It replaces the Attenuation key in that case.
Each input channel (I and Q) has four internal gain ranges. The maximum allowed voltage in each gain
range is slightly more than the nominal value, so the break point between ranges is a couple of millivolts
higher than the nominal (setting a peak voltage of 0.502 mV will still map to the 0.5 V Peak range).
Gain Setting Volts RMS Volts Peak Volts Peak - Peak dBm (50 Ω ) Break Point
0 dB 0.7071 1.0 2.0 10 n/a
6 dB 0.3536 0.5 1.0 4 0.502 V Peak
12 dB 0.1768 0.25 0.5 –2 0.252 V Peak
18 dB 0.0884 0.125 0.25 –8 0.127 V Peak
Key Path
AMPTD Y Scale
Notes Visible only when the selected input is I/Q.
State Saved No
Readback Text When Range is Auto, "[Auto]"
When Range is Man and I & Q are the same, "[<range value>]"
When Range is Man and I & Q are different:
"[I: <I range value>
W-CDMA & HSPA Measurement Applications Reference 1647