User's Manual

• Dedicated modem signal meter (Sencore MSM980)
• Spectrum analyzer (Anritsu MS2711B)
• Channel-selectable cable-TV meter.
They are described below.
All devices measure the downstream signal level received from the base station. This provides an
optimum alignment as the downstream receive antenna has a narrower beam width than does the
upstream transmit antenna also housed in the Transceiver. By optimizing the downstream, the
upstream is optimized automatically.
Once the particular alignment method is chosen, and connected to measure the downstream signal
level (receive), the Subscriber Transceiver is peaked as follows:
1. Using a 7/16” open end, box or socket wrench, loosen the two elevation alignment bolts until
the Transceiver can be oriented up or down by hand, but will hold its position.
2. Observe the display of the alignment device being employed and orient the Transceiver up
and down to achieve a maximum peak signal. There may be other smaller peaks, but the
main one should be evident.
3. Tighten the elevation alignment bolts slightly.
4. Using the same wrench loosen the four mounting bolts so the transceiver can be oriented
side to side by hand.
5. Observe the display of the alignment device being employed and orient the transceiver side
to side to achieve a maximum peak signal. There may be other smaller peaks, but the main
one should be evident.
6. Tighten the elevation alignment bolts slightly.
7. Repeat the elevation (up or down) adjustment, and then the azimuth (side by side)
adjustment once again.
8. Tighten the elevation alignment bolts taking care not to over tighten.
9. Tighten the mounting bolts firmly, but do not over tighten as that simply bends the mounting
brackets.
The three pieces of equipment are discussed below.
2.1.3 AR100 Signal Strength Meter
The AR100 Signal Strength Meter (SSM) is a small hand held device that is temporarily inserted
between the Transceiver end of the coaxial cable down lead and the Transceiver itself.
June 2003 Page 2-3