M O D E M E L I M I N A T O R S

12

 

MME, MME/V.35

I M

I N

Replaces Two Sync Modems

 

E R U T A

Data rates

MME: selectable up to 19.2 kbps

MME/V.35: 56/64 kbps

Interfaces

MME: RS-232/V.24

MME/V.35: V.35

Range of 100m (330 ft) on each side

Selectable RTS-to-CTS delay

Carrier-controlled or constantly ON

Visit www.rad.com for latest product updates

The MME and MME/V.35 miniature modem eliminators replace two synchronous modems, permitting direct DTE-to-DTE connection. They have a maximum range

of 100 m (330 ft) on each side. MME operates at selectable data rates up to 19.2 kbps. MME/V.35 operates at 56/64 kbps, replacing high speed modems.

The MME and MME/V.35 generate the receive and transmit clocks internally for the two synchronous DTEs as well as the control signals necessary to emulate half or full duplex operation.

The delay between Request to Send and Clear to Send can be independently set (on the MME, on port 0 or 6.6, or 53 msec; and on the MME/V.35, on port 0 or 7, or

64 msec). Carrier Detect signal can be set to constantly ON, or used as a DTE-to-DTE handshaking signal where RTS on one port is converted to DCD on the other port.

Three models are available:

MME requires no external power supply, drawing low power from the data and control signals. Physical connection between the MME and the DTEs is via

25-pin D-type connectors, either male or female.

MME/V.35 requires no external power supply, drawing low power from the V.35 control signals.

MME/V.35P has a jack for connection to an external wall-mounted power supply of 9.12 VDC/200 mA. The MME/V.35P is used in applications where the DTEs do not provide the control signals necessary to power the MME/V.35.

Physical connection between the MME/V.35 and the DTEs is via two 34-pin V.35 connectors, each on a 30 cm (1 ft) cable.

/ S M E D O M C I T P O R E B I F

100 m

330 ft IBM 37X5

 

M E D O M

MME up to 19.2 kbps

I M I L E

N

MME/V.35 56/64 kbps

 

100 m

T A

330 ft

 

SRO

 

IBM 3174

RAD Data Communications 2006 Catalog

155