User Manual

Table Of Contents

2: Setup Menu

APCD-LM047-1.1 11

• searching for a CCU - A complete sweep of all frequencies takes about 30 seconds.

The display shows which frequencies may be CCUs. A search is started when any of

the following occurs:

• the modem boots up, either due to a hard (power) reset or software reset,

• no CCUs are found during the last frequency sweep, so that the modem

cannot register with any CCU found during the last sweep,

• the modem has received no signal from the CCU in the last two minutes. This

indicates that the CCU or radio link is down.

• attempting to register with a CCU - When a frequency sweep has been completed,

the modem attempts to register with the CCUs in the order of best signal down to

poorest. The modem may not register with a CCU for a number of reasons, in which

case the modem attempts the next CCU in the frequency list. If the modem cannot

be able to register with a CCU include:

• The modem is not authorized to register at that CCU,

• The signal detected is not a valid CCU.

• registered with a CCU - This state occurs when the modem has a frequency and has

successfully registered with a CCU. At this point, the modem can provide a link to the

Internet through the CCU.

An example of the Radio Link Status display is shown below.

Radio Link Status Display

Searching: found 9070 9086

Searching: found 9070 9086 9114

Searching: found 9070 9086 9114 9142

Registered at 9114

Signal Strength Signal Quality

1 2 3 4 5 6 7 8 | 1 2 3 4 5

4.0 *********** 1.5 *******

4.3 ************ 3.5 *****************

5.0 **************** 3.0 **************

4.7 *************** 2.5 ***********

6.7 *********************** 2.0 *********

5.0 *************** 1.5 *******

3.7 ********* 4.0 ********************

6.0 ******************* 3.0 ***************

8.7 ******************************* 3.5 *****************

8.0 ***************************** 4.5 ***********************

The Signal Strength and Signal Quality graphs and values are Figures of Merit and are

interpreted using the tables below. The goal for aligning the antenna is a Signal Strength of 5

or better and a Signal Quality of 4 or 5, if possible.