User Manual

Table Of Contents

3: Setup Menu

APCD-LM048-1.1 17

• 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 traffic from the CCU in the last two minutes

• 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 the same Figures of Merit

discussed in section 2.5, Interpreting the LEDs. The goal for aligning the antenna is the same

as for the MDB1000, namely a Signal Strength of 5 or better and a Signal Quality of 4 or 5, if

possible.