Instruction Manual

DESCRIPTION 2-28

MCC-545C PACKET DATA RADIO

12/2000

3.3 Power-Up Sequence

IMPORTANT

Before applying power to the MCC-545C check all connections between the MCC-545C and the

external equipment (power, antenna, operator terminal, GPS receiver and data logger).. Refer to

Section 3.2.2 for complete cabling instructions.

3.3.1 Power On

CAUTION

Disconnect the antenna cable until the unit ID has been set (see paragraph 3.3.2).

To power up the MCC-545C, apply +12V

to the power connector.

NOTE

When the unit transmits it will draw up to 25 amps, therefore, review section 3.2.2.1 for cabling

to the power source. The voltage drop at the input connector during transmission should be less

than 2 V

for proper operation of the unit.

The following message should appear on the operator terminal when power is applied:

12/23/00 16:54:10 POWER SHUTDOWN/FAIL OCCURRED.

01/02/01 12:54:44 POWER HAS BEEN RESTORED... RESUMING OPERATION.

If this message does not appear then the baud rate may not be set correctly in the operator

terminal. The default baud rate setting in the MCC-545C is 9,600 baud, 8 data bits, one stop bit

and no parity. This baud rate setting may be changed in the MCC-545C using the SETBAUD

and SAVE commands, as described in Chapter 4.

The default baud rate settings are stored in flash memory. However, it is possible to lose these

settings if the lithium battery has lost its charge after the MCC-545C has been sitting on the shelf

for an extended time period. In that event, a message similar to that shown below will appear

upon start-up.

METEOR BURST RADIO SUBSYSTEM MBCT

RF Modem S/W Part Number P1060-00-00 Version 6.25 12/19/00

The desired baud rate must then be entered using the SETBAUD and SAVE commands.