User Manual

CompactRF

Operating Manual: Chapter 4 Configuration 19

Configuration options are

not stored in non-volatile

memory until the WRITE

command (&W) is executed

&S DSR (Data Set Ready)

The &S command controls the DSR line for the modem, and determines

when it is active

&S0 DSR is always ON

*&S1 DSR is ON in Data Mode, OFF in Command Mode

&S2 DTR/DSR signaling. With &S2, Slaves and repeaters

output the state of the master’s DTR on their local DSR line. Master

outputs the state of a slave’s DTR on its local DSR line only in

point-to-point mode (i.e., DTR is a two-way signal transfer in point-

to-point mode, and a one-way signal transfer in point-to-multipoint

mode).

&V View Configuration

The &V command displays all S registers and their current values.

&E Framing Error Check

This command enables or disables Framing Error Check. When enabled, the

modem looks for the stop bit. If the stop bit is absent, the byte is thrown out.

When enabled, the modem also does a parity check. Note that the data

format (number of data bits, parity type, and number of stop bits) is defined

by S register 110.

*&E0 Disable Framing Error Check

&E1 Enable Framing Error Check

&W Write Configuration to Memory

The &W command stores the active configuration into the modem’s non-

volatile memory.

Sxxx? Read S register value

This command causes the modem to display the current setting of S register

xxx.

Sxxx=yyy Set S register value (see section 3.3 S-Registers)

This command sets the specified S register to a value specified by yyy.