3.1 System Calibration and Configuration Menu
The Calibration Menu also allow for various features to be enabled or disabled on the
system. To enter the system configuration mode press and hold down both the and
buttons while the unit is powered up. When the display reads “Calibration”, release the
two buttons. The unit now displays the main system configuration menu. Using the and
buttons, select the option to configure, and press the ‘MODE’ button to configure that
option. A detailed explanation of all of the options is described below (and on Table 7,
page 15).
3.1.1 Forward Power
This option calibrates the dBm scale used by the display. Before this step can be
completed, the VVA levels must be calibrated. To perform the Forward Power
calibration, the amplifier must be attached to an external RF power meter via a load, with
a continuous wave input source to the amplifier. Also, the directional coupler must be
configured for forward power calibration.
Example:
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: “Fwd 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: “Fwd 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
forward power levels have been calibrated, press the GAIN button, then the unit returns
to the main System Configuration menu.
3.1.2 Reverse Power
This option calibrates the dBm scale used by the display. Before this step can be
completed, the VVA levels must be calibrated. To perform the Reverse Power
calibration, the amplifier must be attached to an external RF power meter via a load, with
a continuous wave input source to the amplifier. Also, the directional coupler must be
configured for reverse power calibration.
Example:
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