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RAD Short Range Modems
RAD SRM-31A
Asynchronous 2-wire Short Range Modem
Asynchronous
2-wire full duplex
Transmission range up to 8 km (5 miles)
I-DSL technology and 2B1Q line coding
Operates opposite ASM - 31, ASMi - 31, and HS-U modules of MP-2000 and MP-2100
V.24/RS.232 DTE interface
Diagnostic loops according to ITU V.54
Selectable data rates:
1.2 kbps - 115.2 kbps
LED indicators
Configuration download option when working opposite ASMi - 31
High voltage line protection in compliance with ITU K.21
RAD SRM-31S
Synchronous 2-wire Short Range Modem
Synchronous
2-wire full duplex
Transmission range up to 8 km
I-DSL technology and 2B1Q line coding
Operates opposite ASM - 31, ASMi - 31 and HS-U modules of MP-2000 and MP-2100
V.24/RS-232 or V.35 digital interfaces
Diagnostic loopbacks according to ITU V.54
Selectable data rates: 1.2 kbps-128 kbps
Configuration download option when working opposite ASMi - 31
LED indicators
High voltage line protection in compliance with ITU K.21
RAD SRM-9
Miniature Async/Sync Short Range Modem
Synchronous or asynchronous
Data rates up to 128 kbps sync and 115.2 kbps async
V.54 diagnostics, including local and remote loopbacks
Built-in BER tester in compliance with V.52
Full or half duplex for point-to-point or multipoint applications
Half duplex over 2-wire lines
Internal, external or receive clock
Controlled or continuous carrier
V.35, V.24 / RS-232, X.21 or RS-530 interfaces available
Isolation transformers
Operates with an external power supply (except SRM - 9/V.24/UP)
LED indicators
RAD SRM-3A
Ultra Miniature Async Isolated Short Range Modem
Asynchronous transmission up to 19.2 kbps
Transmission range up to 13 km (8 miles)
Ultra-miniature modem using hybrid technology
No AC power required
Transformer isolated
9-pin RS-232-C/V.24 connector
Compact, lightweight, easy to install
Plugs directly into IBM PC/AT and Unisys U6000/50, U7000/52
Can be used with both STP and UTP
RAD SRM-3D
Ultra Miniature Async Short Range Modem
Asynchronous transmission up to 19.2 kbps
Transmission range up to 21 km (13 miles)
Ultra-miniature modem using hybrid technology
No AC power required
9-pin RS-232-C/V.24 connector
Compact, lightweight, easy to install
Plugs directly into IBM PC/AT and Unisys U6000/50, U7000/52
Can be used with both STP and UTP
RAD SRM-5A, 5D
Miniature Async Short Range Modems
Asynchronous transmission rate up to 19.2 kbps
Transmission range:
SRM - 5A: up to 12 km (7.5 miles)
SRM - 5D: up to 27.5 km (17 miles)
No AC power required
Transformer isolated (SRM - 5A only)
V.24/RS-232-C interface
Compact, lightweight, easy to install
RAD SRM-5AC
Asynchronous Short Range Modem
Asynchronous, full or half duplex
Data rates up to 19.2 kbps
Point-to-point or multipoint
Transmission range up to 6.8 km (4.1 miles)
Internal filter for high noise immunity and for surge protection
DCE/DTE mode
Transformer isolated
No AC power required
LED indicator for carrier detection
RAD SRM-6S, 5S
Synchronous Short Range Modems
Synchronous transmission rate, selectable up to 19.2 kbps
Full duplex, point-to-point
Transmission range up to 11 km (6.5 miles)
No AC power required
LED indicator for Carrier Detect (SRM - 5S only)
Transformer isolated
Compact, lightweight, easy to install
Card version for 19 in rack
RAD SRM-5SC, 6SC
Sync Multipoint Short Range Modems
Transmission data rates up to 19.2 kbps, synchronous
Full or half duplex, point-to-point or multipoint
Internal or external clock
Transmission range up to 14.5 km (9.1 miles)
Transformer isolated
No AC power required
Easy to install
Compact, lightweight
LED indicator (SRM - 5SC only)
RAD SRM-5SX, 6SX
Synchronous 2-wire Short Range Modems
Full duplex over single twisted pair or coax
Transmission data rate up to 19.2 kbps, synchronous
Transmission range up to 1.3 km (0.8 miles)
Internal, external, or loopback clock
Transformer isolated
LED indicator for carrier detection (SRM - 5SX only)
No AC power required
Compact, lightweight, easy to install
RAD SRM-5TX,6TX
Asynchronous 2-wire Short Range Modems
Transmission data rates up to 19.2 kbps, asynchronous
Transmission range up to 1 km (0.6 miles) over 19 AWG
Full duplex operation over single twisted pair or coax cable
One control signal transferred end-to-end
Transformer isolated
V.24/RS-232 interface
LED indicator (SRM - 5TX only)
Available as a card for 19" modem rack
No AC power required
Compact, lightweight, easy to install
RAD SRM-6A, 6D
Asynchronous Short Range Modems
Asynchronous, full duplex
Data rates up to 19.2 kbps
Transmission range (for 24 AWG):
SRM - 6A: up to 8 km (5.0 miles)
SRM - 6D: up to 8 km (5.0 miles)
No AC power required
Transformer isolated
(SRM - 6A and SRM - 6AU only)
DCE/DTE switch
Plugs directly into V.24/RS-232 connector
Compact, lightweight, easy to install
Available as a standalone unit or as a card for mounting in a 19" modem rack
Internal filter for high noise immunity and noise suppression
(SRM - 6AU only)
RAD SRM-6AC
Asynchronous Short Range Modem
Asynchronous transmission
Data rates up to 19.2 kbps
Full or half duplex
Point-to-point or multipoint
Transmission range up to 7.5 km (4.7 miles)
DCE-DTE switch
Transformer isolated
No AC power required
Compact, lightweight, easy to install
Internal filter for high noise immunity and surge protection (SRM - 6ACU only)
Also available as a rack-mount card
RAD SRM-6AU
RAD SRM-6DC
Async Multipoint Short Range Modem
Asynchronous
Data rates up to 38.4 kbps
4-wire full or half duplex operation
Complies with RS-485 standard (multipoint environment)
Operates in multipoint with up to 50 DTEs
Transmission range up to 15 km (90 miles)
Strain relief for line cable
No AC power required
Compact, lightweight, easy to install
RAD SRM6DX Short Range Modem
RAD SRM-6L
Asynchronous Short Range Modem
Asynchronous transmission
Up to 19.2 kbps
Full or half duplex
Point-to-point or multipoint
Transmission range up to 3.2 km (2 miles)
DCE/DTE switch
Strain relief for line cable
Lightning protected
No AC power required
Easy to install
Compact, lightweight
Insensitive to wire polarity
RAD SRM-8
Miniature Async/Sync Short Range Modem
Asynchronous or Synchronous
Data rates up to 19.2 kbps
V.54 diagnostics, including local and remote test
Full or half duplex, point-to-point or multipoint
Internal, external or receive clock
Transmission range up to 17 km (10 miles)
Lightning protected
No AC power required
Easy to install
Miniature, lightweight
RAD SRM-8H
Miniature High Speed Short Range Modem
Synchronous or asynchronous
Data rates of 56 or 64 kbps, selectable
V.54 diagnostics, including local and remote test
Internal, external or receive clock
Transmission range up to 10 km (6 miles)
Controlled or continuous carrier
Isolation transformers
V.35, V.24/RS-232, X.21 or RS-530 interfaces
LED indicators
Miniature, lightweight, easy to install
Operates with an external power supply
RAD SRM-8V
Miniature Async/Sync Short Range Modem
Synchronous or Asynchronous
Data rates up to 38.4 kbps
V.54 diagnostics, including local and remote loopbacks
Full or half duplex for multipoint or point-to-point
Half duplex over 2-wires
Internal, external or receive clock
Controlled or continuous carrier
DCE/DTE switches
Isolation transformers
No AC power required
LED indicators
Miniature, lightweight, easy to install
RAD LDV-2 Data Over Voice Multiplexer
Simultaneous data and voice over 2-wire
Synchronous or asynchronous
Data rates up to 19.2 kbps
Extended range up to 9 km (at 9.6 kbps)
Diagnostic capabilities
VLSI implementation
Integral or separate telephone filters
Point-to-point or multipoint
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