Select: Test Menu Branch - Comtech EF Data MBT-5000 User's Installation And Operation Manual

MBT-5000 L-Band Up/Down Converter System
Front Panel Operation
ConvX LNA: Calibr (Calibrate Reference Current)
ConvX LNA Ref = 400.0 mA
Calibrate: No Yes (◄ ► E)
On the bottom line, use the ◄ ► arrow keys to select No or Yes, and then press ENTER. If you
select Yes and the LNA successfully calibrates, the current value appears on the top line of the
screen (e.g., 400.0 mA).
If calibration fails, however, the error message "Calibration failed. Out of
Range." Displays, an the MBT-500 returns you to the previous menu. You will also observe,
once the previous menu re-displays, that no value appears on the top line for the reference
current (e.g., N/A):
ConvX LNA Ref = N/A
Calibrate: No Yes
ConvX LNA: (Window) Enable
ConvX LNA Window:
Disable Enable
On the bottom line, use the ◄ ► arrow keys to Disable or Enable LNA alarms/faults
handling, and then press ENTER.
ConvX LNA: (Window) Range
ConvX LNA Range:
On the bottom line, use the ▼▲ arrow keys to select a range percentage from 20% to 50%,
and then press ENTER.
5.2.6

SELECT: Test Menu Branch

TEST: Lamptest
Press ENTER to begin the diagnostics run on the front panel Light-Emitting Diode arrays and
Vacuum Fluorescent Display. The Side A and Side B LEDs will cycle, and the VFD will briefly
generate a test pattern.
Once the test has run, press CLEAR to return to the SELECT: (Main) menu.
(◄ ► E)
(◄ ► E)
20%
5–21
MN-MBT5000
Revision 4