2. Connect the transmitter to the RF In 50 Ohm connector on the LMR Master using a coupler or attenuator.

3. Press the Frequency main menu key to set the receiver center frequency (Rx Freq) of the measurement. Use the arrow key, rotary knob or the numeric keypad. When using the keypad, select the appropriate terminator submenu key to set the center frequency.

4. Press the Setup main menu key to select the modulation type and Rx pattern. Select C4FM modulation for Phase I systems or CQPSK for Phase II and LSM systems. Press the Rx pattern key to choose the pattern against which to measure error rates. 1011/1031 Hz and O.153 (V.52) will measure BER directly against the selected pattern. Voice uses a proprietary method to estimate BER from regular voice traffic. Ctrl Channel will produce a Message Err Rate (MER) based on the CRC checksums contained in Control Channel messages and estimated BER using a proprietary algorithm.

5. Press the Amplitude main menu key, then the Rx Power Offset submenu key to set the receiver attenuation (or gain). Use the arrow keys, rotary knob or the numeric keypad to enter the adjustment value, up to 100 dB and select either the Loss or Gain submenu key. The offset will be applied to the Received Power value in the Summary graph. For instance, if the transmitter under test is emitting 50 watts (+47 dBm) of power, and the External Attenuation value is 40 dB (such as from a 40 dB directional coupler), the Received Power displayed will be +7 dBm.

6. Press the Measurement key, then the P25 Analyzer submenu key. Select the Graph types to view with the Graph Type submenu key. The Symbol Span submenu is used to adjust the number of “eyes” displayed across the screen in the Eye Diagram graph. Refer to P25 Analyzer Graphs on the available graph types.

2. Connect an antenna with the appropriate frequency range to the RF In 50 Ohm connector on the LMR Master.

3. Press the Frequency main menu key to set the center frequency of the measurement using the Rx Freq key. Use the arrow key, rotary knob or the numeric keypad. When using the keypad, select the appropriate terminator submenu key to set the center frequency.

4. Press the Setup main menu key to select the modulation type and Rx Pattern (BER pattern). Select C4FM modulation for Phase I systems or CQPSK for Phase II and LSM systems. Press the Rx Pattern key to choose the pattern against which to measure error rates. 1011 Hz and O.153 (V.52) will measure BER directly against the selected pattern. Voice uses a proprietary method to estimate BER from regular voice traffic. Ctrl Channel will produce a Message Err Rate (MER) based on the CRC checksums contained in Control Channel messages and estimated BER using a proprietary algorithm. Refer to P25 Analyzer Graphs on the available graph types.

2. Direct connect the LMR Master Signal Generator Out 50 Ohm connector to the repeater/receiver or connect an antenna with the appropriate frequency range to the connector.

3. Press the Frequency main menu key to set the transmit frequency using the Tx Freq key. Use the arrow key, rotary knob or the numeric keypad. When using the keypad, select the appropriate terminator submenu key to set the center frequency.

4. Press the Amplitude main menu key, then the Tx Output Lvl submenu key to set the output power. Enter any output attenuation or gain using the Tx Power Offset key.

5. Set the transmit pattern by pressing the Setup main menu key then the Tx Pattern submenu key. Available patterns are listed on the display and additional patterns can be downloaded via the System > Application Options menu.

6. Press the Turn Sig‑Gen ON main menu key to start the signal generator. Press the key again to turn off the signal generator.