Mod Type: Sets the type of modulation. The options are C4FM (Phase I, 12.5 kHz BW) or CQPSK (Phase I or Phase II, 6.25 kHz equivalent BW).

Rx Pattern: Selects the receiver Bit Error Rate pattern. Select a pattern from the list box with the arrow keys or rotary knob and press Enter. There are four available patterns:

Tx Pattern: Selects the transmitter pattern to send when the Turn Sig‑Gen ON main menu key is selected. Select a pattern from the list box with the arrow keys or rotary knob and press Enter. Refer to Using the Signal Generator for Receiver or OTA Analysis for the list of available transmitter patterns.

NAC: Sets the Network Access Control (NAC) that is sent on the standard P25 1011 Hz Tx Pattern when testing receivers. 293 is the P25 system default value.

Squelch Lvl: Sets the squelch power level. When the Received Power is lower than the set squelch level, all summary graph measurements except for Received Pwr will be blanked out (--).

Averaging: Sets the refresh rate of the numerical values in the P25 Summary window. Setting a higher number (25 maximum) will reduce measurement jitter.