Land Mobile Radio Analyzer and Coverage Measurement Guide : NBFM Analyzer : Amplitude Menu
 
Amplitude Menu
Key Sequence: Amplitude
NBFM Analyzer Amplitude Menu
Ref Level:
Sets the reference power level at the top of the display when Auto Range is Off.
Scale: Scale sets the number of dB per division in the y‑axis power scale of the Spectrum Graph. Enter a value from 1 dB per division to 15 dB per division using the keypad, the arrow keys, or the rotary knob.
Note: The Vertical Scale Menu is displayed when NBFM Coverage (Measurement > NBFM Coverage) is selected. This menu is not used when the NBFM Quieting or NBFM SINAD measurements are enabled.
Rx Power Offset: Sets the receiver (RF IN connection) external attenuation or gain. Press the Rx Power Offset submenu key and select
a value from 0 dB to 100 dB then select either dB External Loss or
dB External Gain. The Rx Power Offset setting is displayed on the left side of the screen. The Summary graph Carrier Power and Spectrum Graph Reference Level is adjusted based on this setting.
Auto Rx Range: Pressing this submenu key toggles between On and Off. When On, this function automatically adjusts the reference level based on the input signal.
Adjust Rx Range: When Auto Rx Range is Off, pressing Adjust Rx Range sets the Reference Level automatically for the current measurement.
Tx Output Lvl: Sets the output power of the Signal Generator
(0 dBm or 1 mW or 223 mV max).
Tx Power Offset: Sets the transmitter (Signal Generator Out connection) external attenuation or gain. Press the Tx Power Offset submenu key and select a value from 0 dB to 100 dB then select either dB External Loss or dB External Gain. The Tx Power Offset setting is displayed on the left side of the screen. The displayed Tx Output Level is adjusted based on this setting.
Units: Opens to Units Submenu.
Rx Units: Sets the unit of measure (dBm, watts, or volts) for Received Power in the Summary Graph and the Squelch Level.
Tx Units: Sets the unit of measure (dBm, dBµV, watts, or volts) for the Signal Generator (Tx Output Lvl submenu)
Vertical Scale Menu
Key Sequence: Amplitude > Vertical Scale
Vertical Scale Menu
 
RSSI Scale: Sets the number of dB per division in the y-axis power scale of the RSSI vs. Time graph in Coverage measurement. Enter a value from 1 dB per division to 15 dB per division using the keypad, the arrow keys, or the rotary knob. This setting is not used when the NBFM Quieting or NBFM SINAD measurements are enabled.
SINAD Ref Level: Sets the reference power level at the top of the y-axis power scale of the SINAD vs. Time graph in Coverage measurement. Enter a value from 0 dB to 100 dB using the keypad, the arrow keys, or the rotary knob.
THD Ref Level: Sets the Total Harmonic Distortion reference percentage value in Coverage measurement. Enter a value from 0.00 % to 100.00 % using the keypad, the arrow keys, or the rotary knob.
EXT SINAD Ref Level: Sets the External SINAD reference power level in Coverage measurement. Enter a value from 0 dB to 100 dB using the keypad, the arrow keys, or the rotary knob.