Installation Instructions
Installation and Commissioning Guide - R2.0
4-14 © 2001 Triton Network Systems, Inc. All Rights Reserved.
Verify Main Beam Alignment
Use Tx power to determine if you are aligned on a side lobe. First, make sure AdTPC is turned
on. Second, record the Tx power on both sides of the link. If (Tx
1
- nominal Tx) < 3.5 dB or (Tx
2
- nominal Tx) < 3.5 dB, proceed to Verify Link Integrity. Otherwise, realign the link.
Verify Link Integrity
To verify link integrity, compare the bi-directional link data. First, make sure AdTPC is turned
on. Second, record the Tx power on both sides of the link. If the absolute value of ((Tx
1
- Tx
2
) +
(RSSI
1
- RSSI
2
)) < 8 dB, then proceed to Verify Closed Loop Link Balance. Otherwise, contact
the Triton Network Systems Technical Assistance Center (TAC) at 1-866-687-4866.
Verify Closed Loop Link Balance
To check for basic link symmetry, compare the closed loop AdTPC link balance. First, make sure
that AdTPC is turned on. If (RSSI
1
- RSSI
2
) < 4 dB or (RSSI
2
- RSSI
1
) < 4 dB, then the RF link
is acceptable. Otherwise, contact the Triton Network Systems Technical Assistance Center
(TAC) at 1-866-687-4866.
4.6 Alignment Troubleshooting
4.6.1 No Peaks Appear on the Voltmeter During Alignment
Start Power - the power at which the IFU transmits when AdTPC is off - is calculated based on
clear-air path loss over the given hop distance. When extra attenuation (such as rain or glass) is
present during alignment, the receive IFU may require a higher power level. In this situation,
IFU link manager allows for incremental increases in the start power.
For further information on how to incrementally increase start power, refer to IFU Link Manager
Online Help at C:\Programs\Triton\help\TOC.html.
4.6.2 No Side Lobes Appear on the Voltmeter During Alignment
If two equal peaks (no side lobes) appear on the voltmeter during alignment, perform the
following steps:
If two equal peaks appear while sweeping the horizontal plane:
1. Move the IFU to the null spot in the middle of the two equal peaks.
2. Tighten the horizontal alignment nut.
3. Loosen the four vertical screws on the bracket.
NOTE: If main beam alignment and modem power are verified, minimum Tx power is being
transmitted.