Installation Troubleshooting
9711 C & Ku-Band TXRX
15-2
15.1.2.
1:1 SYNCHRO
Observe the ship's heading display on the MXP. Compare its movement with that of the ship. If it does not
move at all go to step 1. If it moves but in the wrong direction (even if it does not display the correct
heading) go to step 2. If it moves in the correct direction but does not display the correct heading go to step
3. The gyro compass connects to the R1, R2, S1, S2 and S3 terminals.
CAUTION - Electrical Shock Potentials exist on the Gyro
Compass output lines. Assure that the Gyro Compass output is
turned OFF when handling and connecting wiring to the
Terminal Mounting Strip.
1.
The Ships Heading display does not change when the ship changes direction. Using a
multimeter read between R1 and R2. It should read 115 VAC. If it does not then a fuse is blown at
the gyro repeater or there is an open between the repeater and the MXP. Read between S1 and S2,
S2 and S3 and finally S3 and S1. They should all read between 0 and 90 VAC. The voltage level will
change as the ship turns. If one reading is very close to 0 volts wait until the ship has made a major
change in heading and then check voltage again. If the reading is still very low there is a problem in
the line between the gyro repeater and the MXP or a problem in the gyro repeater itself.
2.
The display changes in the direction opposite of the movement of the ship. Switch the
secondary leads S1 and S2. Caution: there is 90 VAC between them! Verify that when the ship
changes direction the display shows change in the same direction. If the direction is correct but the
heading is incorrect go to step C.
3.
The ship's heading display does not indicate the correct heading. If the display is off by
60, 180 or 300 degrees, this indicates that R1 and R2 are reversed. Reverse R1 and R2 and recheck
the heading display. If the display is off by 120 or 240 degrees, this indicates that S1, S2 and S3 are
in the right order but off by one place. Note their positions and carefully move the connections one
position over (S1 to S2, S2 to S3, and S3 to S1). This action will offset the display by 120 degrees.
Check if the display now reads correctly. If not move all three leads one more time in the same
direction as last time. Verify that the ship's heading is correct.
15.1.3.
360:1 Synchro
Observe the ship's heading display on the MXP. Compare its movement with that of the ship. If it does not
move at all go to step 1. If it moves but in the wrong direction (even if it does not display the correct
heading) go to step 2. If it moves in the correct direction but does not display the correct heading go to step
3. The gyro compass connects to the R1, R2, S1, S2 and S3 terminals.
CAUTION - Electrical Shock Potentials exist on the Gyro
Compass output lines. Assure that the Gyro Compass output is
turned OFF when handling and connecting wiring to the
Terminal Mounting Strip.
1.
The Ship’s Heading display does not change when the ship changes direction. Using a multimeter
read between R1 and R2. It should read 115 VAC. If it does not then a fuse is blown at the gyro
repeater or there is an open between the repeater and the MXP. Read between S1 and S2, S2 and
S3 and finally S3 and S1. They should all read between 0 and 90 VAC. The voltage level will change
as the ship turns. If one reading is very close to 0 volts wait until the ship has made a major change
in heading and then check voltage again. If the reading is still very low there is a problem in the line
between the gyro repeater and the MXP or a problem in the gyro repeater itself.
2.
The display changes in the direction opposite of the movement of the ship. Switch the secondary
leads S1 and S2. Caution: there is 90 VAC between them! Verify that when the ship changes
direction the display shows change in the same direction. If the direction is correct but the heading
is incorrect go to step C.
3.
If the ship's heading is different than the bridge, select the HDG function in the SHIP display mode by
pressing the SHIP key 4 times. Key in the correct heading using the numeric keys and press ENTER.
Summary of Contents for 9711 C
Page 4: ......
Page 10: ...Table of Contents x This Page Intentionally Left Blank ...
Page 21: ...Site Survey 9711 C Ku Band TXRX 2 8 This Page Intentionally Left Blank ...
Page 57: ...Configuring a Computer for the MXP 9711 C Ku Band TXRX 4 6 This Page Intentionally Left Blank ...
Page 61: ...Setup Tracking Receiver VSAT 9711 C Ku Band TXRX 6 2 This Page Intentionally Left Blank ...
Page 81: ...Setup Targeting 9711 C Ku Band TXRX 11 4 This Page Intentionally Left Blank ...
Page 91: ...Quick Start Operation 9711 C Ku Band TXRX 13 6 This Page Intentionally Left Blank ...
Page 115: ...Drawings 9711 C Ku Band TXRX 19 2 This Page Intentionally Left Blank ...
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