P25 Analyzer: Opens the Display Menu.

P25 Control: Opens the Control Channel Menu. This submenu key is valid only when Rx Pattern is set to Control Channel or Voice.

P25 Coverage (Option 522 required): Opens the P25 Coverage menu. Refer to LMR Coverage Mapping.

P25 Bit Capture: This submenu key is valid only when Rx Pattern is set to Voice. Pressing this key opens a submenu for logging data to a file. Make sure that a formatted USB flash drive is attached to the instrument before starting bit capture. The log files are saved in a time‑stamped folder under the usr folder on the USB flash drive.

Set Log Data to On to start the bit capture. There is a five second delay from initiating the bit capture (Log Data On) until the instrument starts logging data, then the instrument logs data in five second bursts with five second gaps between bursts. The data bursts are concatenated into a single log file. Bit capture will continue until Log Data is set to Off or the USB flash drive is filled.

If Log Data is On, any of the following functions will stop the logging:

Rx Frequency change
Setup change
Starting another measurement

P25 IQ Capture: Pressing this key starts the IQ data capture. Make sure that a formatted USB memory device is attached to the instrument before starting IQ Capture. When the capture is complete, a message is displayed. This may take a few seconds.

Rcv Pwr Averaging: Select Median to measure the RSSI value using the median of captured subsamples of the Rx signal, in accordance with TIA TSB-88.3 Rev. F. Select Mean to measure the RSSI value using the average of the subsamples of the Rx signal.

Active Graph 1 2 3 4: In Four Screen view use this menu to select which of the four graphs is active. The current active graph is underlined (1 2 3 4) and has a red perimeter line. Any of the four graphs can also be made active by tapping once on the touch screen. Repeatedly pressing the Active Graph submenu key will cycle the active graph, 1 through 4.

In Standard view (one graph displayed on the screen) the Active Graphic key will rotate between the four graphs displayed in the Four Screen view.

Maximize/Minimize Active Graph: The submenu key toggles between displaying the Four Screen (4 graphs) view and the Standard view (1 graph). Tapping twice on a selected graph also toggles between the two display options.

Graph Type: The label on the bottom of this button displays the current active graph type. Pressing the button will open a list box of the graphs types available for P25 Analyzer measurements. Select the desired graph type with the arrow keys or rotatory knob and press Enter. The current active graph will be replaced with the new selection.

Available graphs include:

Refer to P25 Analyzer Graphs for additional information.

Symbol Span: Use this menu to adjust the number of symbols viewed across the screen in the Eye Diagram graph. Adjust from 2 and 5 using the keypad, the arrow keys, or the rotary knob. Keypad values entered outside of this range are ignored.

Back: Returns to the Measurement Menu.

Log Data: Saves the measurements to an external USB flash drive. The external USB flash drive must be attached to one of the USB Type A connectors to Log data files.

The files are saved in a time‑stamped folder under the usr folder on the USB flash drive.

If Log Data is On, any of the following functions will stop the logging:

Rx Frequency change
Setup change
Starting another measurement

Hex Trigger: Turns On or Off the Hex Trigger set with the following command. Sweep will continue until the trigger value is detected. At that time Sweep will change from Run to Hold.

Set Trigger Value: Opens a touchscreen hexadecimal keyboard for setting the Trigger value.

Sweep: Toggles the frequency sweep of the LMR Master between Run and Hold. Save function as Shift + Sweep (3).

Back: Returns to the Measurement Menu.