Sea Tel 9797B-70 C-Band TX/RX, Инструкция по установке и эксплуатации

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9797B-70 C-Band TXRX Setup
5-5
Use the LEFT/RIGHT keys to underscore the desired digit(s) then use the UP/DOWN arrow keys to
increment/decrement the underscored value. When you have finished editing the display value, press ENTER
to send the HFO value command to the PCU (but it is not save yet).
If you want to find out what the
current
HFO value is key in N6
999
and hit
ENTER.
When completed, you must save the desired HFO value. Press ENTER several times to select the REMOTE
PARAMETERS display. Press the LEFT or RIGHT arrow key to enter writing mode and then press the ENTER to
save the HFO value in the PCUs NVRAM.
EXAMPLE: In the “You Observe “Home” Pointing is LEFT of the Bow-line” example above, the HFO
calculated was 222. To enter this value:
1. Set the Remote Command value to " N6222 ".
2. Press ENTER to send this HFO to the PCU. The display should now show "N0222".
3. When completed, you must save the desired HFO value. Press
ENTER
several times to select the
REMOTE PARAMETERS display. Press the LEFT or RIGHT arrow key to enter writing mode and
then press the ENTER to save the HFO value in the PCUs NVRAM.
You must drive the antenna CW in azimuth until the home switch is actuated, or re-initialize the antenna to
begin using the new HFO value you have entered and saved. To re-initialize the antenna from the
REMOTE COMMAND window of the ACU;
4. Press UP arrow key several times to return to the REMOTE COMMAND display.
5. Press the LEFT or RIGHT arrow key to enter edit mode. Use the LEFT / RIGHT and UP / DOWN
arrow keys to set the character and digits to "
^0090
" and then press the
ENTER
key.
This resets the PCU on the antenna. The antenna will reinitialize with this command (Performs a similar
function as a power reset of the antenna) and the new home flag offset value will be used to calibrate the
Relative position of the antenna.
5.4.3. Radiation Hazard and Blockage Mapping (AZ LIMIT parameters)
The ACU can be programmed with relative azimuth sectors (zones) where blockage exists or where transmit
power would endanger personnel who are frequently in that area. Your ACU software may allow you to set
four zones or it may only three zones and i5 volt polarization.
When the AZ LIMIT parameters are set to create these ZONES, up to four, several things happen when the
antenna is within one of the zones:
1. Tracking continues as long as the AGC value is greater than the Threshold value. When the AGC
value drops below Threshold, the antenna will wait “Search Delay” parameter amount of time and
then re-target the satellite you targeted last (if 4 value is included in SYSTEM TYPE). Timeout and
re-target will continue until the satellite is re-acquired and tracking can resume.
2. “BLOCKED” will be displayed in the TRACKING window wherever the antenna is inside one of the
zones.
3. A contact closure to ground (or an open if the blockage logic is reversed – See SYSTEM TYPE 16
value) is provided on the SW2 terminal of the Terminal Mounting Strip. This Switch output provides
a “Blocked”, “RF Radiation Hazard” or “FCC TX Mute” logic output. When the antenna exits the zone
it will be on satellite, tracking and the SW2 logic contact closure will open.
The lower and upper limits are user programmable and are stored in NVRAM within the ACU parameter list.
AZ LIMIT 1 is the Lower Relative AZ limit (this is the more counter-clockwise of the two points, even
if it is numerically larger). AZ LIMIT 2 is the Upper Relative AZ limit (the more clockwise of the two
points) for pattern mapping of ZONE 1. Enter the elevation value that represents the top of the
blockage between the two azimuth limit points in the EL LIMIT 12 parameter.
AZ LIMIT 3 is the Lower Relative AZ limit (CCW point) and AZ LIMIT 4 is the Upper Relative AZ limit
(CW point) for pattern mapping of ZONE 2. Enter the elevation value that represents the top of the
blockage between the two azimuth limit points in the EL LIMIT 34 parameter.
AZ LIMIT 5 is the Lower Relative AZ limit (CCW point) and AZ LIMIT 6 is the Upper Relative AZ limit
(CW point) for pattern mapping of ZONE 3. Enter the elevation value that represents the top of the
blockage between the two azimuth limit points in the EL LIMIT 56 parameter.
AZ LIMIT 7 is the Lower Relative AZ limit (CCW point) and AZ LIMIT 8 is the Upper Relative AZ limit
(CW point) for pattern mapping of ZONE 4. Enter the elevation value that represents the top of the
blockage between the two azimuth limit points in the EL LIMIT 78 parameter. If your ACU software
includes 5 volt polarization you will not see these AZ & EL LIMIT parameters.