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6 Input/Output

6.2 Input

Sets the signal input to be only the Q channel. The I channel will be ignored. The Q

channel will be sent to the digital receiver block as Q+j0. The receiver's output is still

complex. When the center frequency is 0 the imaginary part will always be zero, but

for any other center frequency both the real and imaginary parts will be significant.

Note that since the receiver's real output is displayed as the "I" data, when the

center frequency is 0, the Q Only input appears as the "I" data.

6.2.20 Reference Z

Sets the value of the impedance to be used in converting voltage to power for the I

and Q channels. This does not change the hardware's path impedance (see "Input Z"

on page 2168).

Remote Command

:INPut:IMPedance:REFerence <integer>

:INPut:IMPedance:REFerence?

Example Set the I/Q reference impedance to 50 Ω

:INP:IMP:REF 50

Dependencies Only appears when I/Q is the selected input

Preset 50 Ω

State Saved Yes

Unaffected by a Preset, but set to the default value by Restore Input/Output Defaults or Restore

System Defaults->All

Min/Max 1 Ω - 1 MΩ

6.2.21 I/Q Setup

Lets you set up and calibrate various parameters for the I/Q inputs.

Dependencies Only appears when I/Q is the selected input

6.2.21.1 I Setup

Accesses the channel setup parameters for the I channel.

Differential

Selects differential input on or off for the I channel. For differential input (also called

balanced input), the instrument uses both main and complementary ports. When

differential input is off (also called single-ended or unbalanced input), the

instrument uses only the main port.

2167 Vector Modulation Analyzer Mode User's &Programmer's Reference

Keysight x-series Programmer's Reference

Other manuals for Keysight x-series