Unit: Top line displays: “Using the ‘UP’ and ‘DOWN’ buttons, adjust the output power
to match the level below, and press the ‘MODE’ button.”
Second line displays: “Rev Pwr=27.0 dBm”
User: Use the and buttons to adjust the output power so that the power level read on
the RF power meter is 27.0 dBm. Then press the ‘MODE’ button.
Unit: Top line displays: “Using the and buttons, adjust the output power to match
the level below, and press the ‘MODE’ button.”
Second line displays: “Rev Pwr=28.0 dBm”
User: Use the and buttons to adjust the output power so that the power level read on
the RF power meter is 28.0 dBm. Then press the ‘MODE’ button.
The user can back-up (e.g., go from 32.0 dBm to 31.0 dBm) by pressing the ALC button.
This process continues until all of the calibration points have been taken. After all of the
reverse power levels have been calibrated, press the GAIN button, then the unit returns to
the main System Configuration menu.
3.1.3 Gain/VVA Levels
This should be the first item configured on any system. This option configures the VVA
control voltage.
Example:
In the following example, the unit will be calibrated so that the VVA control voltage will
be 0 volts when the input is to undergo maximum attenuation, and the VVA control
voltage will be 3.75 to 5.00 volts when the input is to undergo minimum attenuation
(actual voltage varies by amplifier model).
User: Selects ‘Gain’ from the main System Configuration menu.
Unit: Top line displays: “Using the ‘UP’ and ‘DOWN’ buttons, adjust the VVA control
voltage to the level specified below, and press the ‘MODE’ button.”
Second line displays: “VVA Level: 100.0%”
User: Connect a voltmeter to Pin 3 of J3, and use the ‘UP’ and ‘DOWN’ buttons to
adjust the voltage to the specified value (typically 3.75 to 5.0 volts, depending on
amplifier model). Then press the ‘MODE’ button.
Unit: Stores the information and returns to the main System Configuration menu.
3.1.4 Monitor Options
This is a series of menus to configure all of the voltage and current monitors, as well as
cutoff points for voltage and current faults.
Example:
In this example, physical monitor 2 will be configured as a current monitor that has a
display range of 0.00 to 9.99 amps, with a shutdown fault if the monitor ever exceeds 8
amps.
User: Select ‘Monitors’ from the main System Configuration menu.
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