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3 Short-Range Comms & IoT Mode

3.2 Modulation Analysis Measurement

standard is not Z-Wave, the 2-FSK will be grayed out

Preset OQPSK

State Saved Yes

Range OQPSK|BPSK|FSK2

Symbol Rate

This control enables you to set the symbol rate (symbols per second) for the

analyzer's digital demodulator. Set this parameter to match the symbol rate of your

system.

Remote Command

[:SENSe]:EVM:SRATe <frequency>

[:SENSe]:EVM:SRATe?

Example

:EVM:SRAT 1 MHZ

:EVM:SRAT?

Preset 1.0 MHz

State Saved Yes

Min/Max 1/500 MHz

Points / Symbol

This control enables you to set how many points are displayed per symbol in the

time displays of demodulated data. The available values are 1, 2, 4, 5, 10 and 20.

Minimum (except OQPSK): 1 point per symbol

Minimum (OQPSK): 2 points per symbol

Maximum: 20 points per symbol

For example, if the value of Points/Symbol is 1, each display point corresponds to a

symbol. If the value is 5, the 5th display point corresponds to a symbol–in this case,

an IQ diagram would show 4 display points between each symbol.

OQPSK Demodulation: For OQPSK, an even number of Points/Symbol is required

due to the offset between I and Q. If you specify an odd value for Points/Symbol, the

analyzer chooses the next, lower, even value.

Remote

Command

[:SENSe]:EVM:PPSYmbol <integer>

[:SENSe]:EVM:PPSYmbol?

Example

:EVM:PPSY 2

:EVM:PPSY?

Couplings If the Modulation Format is OQPSK, the available values are 2, 4, 10, and 20

278 Short Range Comms & IoT Mode User's &Programmer's Reference

Keysight x-series Instruction Manual

Other manuals for Keysight x-series