Sea Tel 9711-92, Инструкция по установке и эксплуатации

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9711-92 Ku-Band TXRX Functional Testing
16-3
16.6. Blockage Simulation Test
Blockage output function is used to modify the behavior of tracking and searching when there is a known blockage
zone. The ACU provides a contact closure to ground on the SW2 terminal of the TMS when the antenna is pointed
within any one of the blockage/hazard zones or the system is searching, targeting, unwrapping or is mis-pointed by 0.5
degrees or more (FCC TX Mute function for Transmit/Receive systems
only
). The contact closure is a transistor switch
with a current sinking capability of 0.5 Amp. This logic output control signal is used for:
•
When used as simple “BLOCKED” logic output for a single Sea Tel antenna, this output could be used to
light a remote LED and/or sound a buzzer to alert someone that the antenna is blocked, and signal is lost.
•
In a “Dual Antenna” installation, this logic output(s) is used to control Dual Antenna Arbitrator panel of
coax switches to switch the source inputs to the matrix switch from Antenna “A” to Antenna “B”, and
vice versa.
•
When used as simple “ RF Radiation Hazard ” logic output for a single Sea Tel TX/RX antenna, this
output could be used to suppress RF transmissions while the antenna is pointed where people would be
harmed by the transmitted microwave RF power output. The SW2 output would be interfaced to the
satellite modem to
disable
the TX output signal from the Satellite TXRX Modem whenever the antenna
is within the RF Radiation Hazard zone(s).
•
When used for “
FCC TX Mute
” logic output for a single Sea Tel TX/RX antenna, this output could be
used to suppress RF transmissions whenever the antenna is mis-pointed 0.5 degrees or more, is blocked,
searching, targeting or unwrapping. The SW2 output would be interfaced to the satellite modem to
disable/mute
the TX output signal from the Satellite TX/RX Modem. When the mute condition is due
to antenna mis-pointing, it will not
un-mute
until the pointing error of the antenna is within 0.2 degrees.
The default output is contact closure to ground when the antenna is mis-pointed, therefore provides a
ground
to “Mute” the satellite modem on the SW2 terminal of the Terminal Mounting Strip. If your
satellite modem requires an
open
to “Mute”, refer to SYSTEM TYPE parameter 16 value to reverse the
output logic from the ACU.
To Test the blockage function:
1. Press the NEXT key until you are at the Status menu. Press ENTER to access the Tracking menu.
2. Press the RIGHT arrow key to bring up and move the cursor to the far right. Press the UP arrow to simulate a
manual BLOCKED condition. BLOCKED will appear in the Tracking display.
3. Verify that SW2 terminal shorts to ground (or open circuit if you have SYSTEM TYPE configured to reverse
the output logic) and that the external alarms actuate OR the Dual Antenna Arbitrator coax switches toggle
(if antenna B is not blocked) OR the Satellite Modem TX is disabled/muted.
4. Press the LEFT arrow key and then press the UP arrow key to turn the simulated blocked condition OFF.
BLOCKED will disappear from the Tracking display.
5. Verify that SW2 terminal is open circuit (or ground if you have logic reversed) and that the external alarms
deactivate OR the Satellite Modem TX is un-muted. The Dual Antenna Arbitrator coax switches should not
toggle until you manually block Antenna B ACU.
16.7. Test Broadband Operation
Open your internet browser and access several internet sites, email or other functions as you normally would.
Operation should be the same as any equivalent service ashore (based on your subscription rate).
16.8. Test Voice Over IP (VOIP) Operation
If Voice Over IP (VOIP) equipment has been provided and services are available from your Internet Service Provider
(ISP) you should verify that this equipment and service are functioning properly.
Pick up the Telephone handset which is to be used for VOIP telephone calls. Check for voice mail messages and/or
place a telephone call (maybe to have them call you back). It is also important to receive a VOIP telephone call by
having someone call you or calling yourself from some other telephone system (shore telephone, cellular or Inmarsat).