User manual

eElectro Industries/GaugeTech Doc # E113-7-03-1.18 2-13

MB: Program Modem Baud Rate

Modem Baud Rate refers to the speed at which the Multiplexor’s processing chip communicates with

the Multiplexor’s internal modem and the Master Port. See the diagram below. The factory setting

for these connections is 9600. If you are using a Multiplexor with a modem, you should increase the

Modem Baud Rate to 38400 for a 33.6k modem and to 57600 for a 56k modem.

NOTE: Check on the speed of your internal modem.

• Type MBn[Enter], where n is a digit between 1 and 8 inclusive:

1=57600; 2=38400; 3=19200; 4=9600; 5=4800; 6=2400; 7=1200; 8=600.

• For example: MB4[Enter] sets the Modem Baud Rate to operate at 9600 baud.

• To confirm this change, Type HU[Enter] (the Unit Status command; see section 2.9).

This change is effective after reset.

Choose Internal/External Modem

This command tells the Substation Multiplexor which type of modem is connected to the unit.

• Type MCI[Enter] for internal modem.

• Type MCE[Enter] for external modem. Be sure to program an initialization string for the

external modem using the MS command (see above).

• To confirm this change, Type HU[Enter] (the Unit Status command; see section 2.9).

• After sending the string, reset the Substation Multiplexor by pressing R[Enter].

Substation Multiplexor

Multiplexor

Processing Chip

Internal Modem

Phone Jack Master Port

(RS232)

“Modem Baud Rate”

refers to these two

connections.

The Multiplexor’s

Internal Modem operates

at a maximum of

56 k baud.