ASM-40 High-Speed Short-Range Modem • Transmit and receive timing can be provided internally, or derived externally from the data terminal or receive signal. Internal FIFO buffers attenuate jitter or correct for phase difference either from the incoming analog signal (line side) or from the external clock on the DTE side. • ASM-40 has comprehensive diagnostics, including: � Local analog, remote digital, and local digital loopbacks in compliance with ITU V.54 requirements FEATURES DESCRIPTION � Built-in pattern generator and tester in compliance with ITU • ASM-40 is a synchronous • High-speed, short-range, V.52 requirements. short-range modem that operates synchronous modem in full-duplex over 4-wire lines or • ASM-40 is also available as a • Operates in full-duplex over BNC coaxial cable. The modem plug-in card, ASM-40/R, for RAD’s unconditioned 4-wire lines extends data transmission range ASM-MN-214, 19-inch card cage. or BNC coaxial cable up to 1.75 km (1 mile). • The device employs HDB3, AMI, • Utilizes HDB3, AMI, or or B8ZS line coding in compliance B8ZS line coding for with G.703 requirements. extending the operation range to 1.75 km (1 mi) • The unit supports a wide range of serial and Ethernet interfaces • Operates at 2048, 1544, including: V.24, V.35, X.21, V.36, 1536, or 1920 kbps line rate RS-530, G.703-HDB3, G.703 Codirectional, Ethernet bridge, • Supports a wide range of Ethernet bridge with VLAN serial and Ethernet DTE support, Ethernet/Fast Ethernet interfaces, operating at bridge with VLAN support, and IP 13 user-selectable data rates router. • Can be used in rate and • The modem line rates support interface conversion different data rates that enable applications ASM-40 to be used as a rate converter: • Conforms to special telecom � 2048 kbps – 32, 64, 128, 256, standards (Austel, TUV, 512, 1024, and 2048 kbps BABT, etc.) � 1536 kbps – 192, 384, 768, and • Provides extensive 1536 kbps diagnostics, including � 1544 kbps – 1544 kbps loopbacks and BER testing � 1920 kbps – 1920 kbps. • Available as a card for RAD’s ASM-MN-214 card cage ASM-40 High-Speed Short-Range Modem SPECIFICATIONS • Impedance • Connector � 75Ω for 2048 and 1920 kbps, DB-15 or 5-clip terminal block: � unbalanced (BNC coax) 100Ω for 1544 kbps and LINE INTERFACE � 100Ω for 1544 and 1536 kbps, 1536 kbps, balanced • Line Type � balanced 120Ω for 2048 kbps and � Unloaded 4-wire twisted pair, � 120Ω for 2048 and 1920 kbps, 1920 kbps, balanced 19 to 26 AWG balanced BNC coax: � BNC coaxial cable, 75Ω � 75Ω for 2048 and 1920 kbps, • Return Loss unbalanced • Line Code Better than 15 dB User-selectable: HDB3, AMI, or • Attenuation B8ZS Up to 40 dB • Framing • Range Unframed 1.75 km (1 mile) over 24 AWG • Transmit Level wire According to G.703 • Line Rate 2048, 1544, 1536, 1920 kbps APPLICATIONS Figure 1. Point-to-Point Interface and Rate Conversion ASM-40 High-Speed Short-Range Modem DTE INTERFACE GENERAL • Pushbuttons ANA – Local analog loopback • Type and Connector • Timing DIG – Local digital loopback � � V.24: 25-pin, D-type, female Internal, from internal oscillator REM – Remote digital loopback � � V.35: 34-pin, female External, from attached DTE PATT – Pattern generator � � X.21: 15-pin, D-type, female Receive, from received signal � RS-530: 25-pin, D-type, female • Physical • Diagnostics � V.36: via adapter cable ASM-40: ITU V.54 compliant loopbacks: converting between RS-530 � Local analog Height: 443 mm / 1.7 in connector and 37-pin, D-type, � Local digital Width: 214 mm / 8.4 in female connector � Remote digital Depth: 258 mm / 10.1 in � G.703-HDB3: 15-pin D-type, ITU V.52 compliant BER testing: Weight 0.88 kg / 1.9 lb female or BNC coax � Built-in pattern generator and ASM-40/R: � G.703 Codirectional: 5-clip tester Fits one slot in the ASM-MN-214 terminal block or RJ-45 card cage • Indicators Note: End-to-end byte synchronization � PWR (green) – ON when power is not maintained on the G.703 • Power is ON interface. AC: 100 to 240 VAC (±10%), � � RTS (yellow) – ON when DTE IR-ETH (Ethernet bridge): RJ-45 50 to 60 Hz, 6.8 VA max activates Request To Send or BNC coax DC: 24 VDC (18 to 36 VDC) or � � TD (yellow) – ON when steady IR-ETH/Q (Ethernet bridge with –48 VDC (–36 to –72 VDC), SPACE is transmitted, blinks VLAN support): RJ-45 5.7W � when data is transmitted IR-ETH/QN (Ethernet/Fast • Environment � RD (yellow) – ON when steady Ethernet bridge with VLAN Temperature: 0°–50°C/32°–122°F SPACE is received, blinks when support): RJ-45 Humidity: Up to 90%, � data is received, not active when IR-IP (IP router): RJ-45 non-condensing the RLB is active • Data Rate � DCD (yellow) – ON when a � 32, 64, 128, 192, 256, 384, valid received line signal is 512, 768, 1024, 1536, 1544, present 1920, or 2048 kbps � TST (red) – ON when ASM-40 is � G.703-HDB3: 128, 256, 512, in any loopback mode, or when 1024, or 2048 kbps PATT is pressed � G.703 Codirectional: 64 kbps � ERR (yellow) – ON or blinks if • G.703/HDB3 Interface errors are present in the test Characteristics pattern, lights up momentarily � when PATT pushbutton is Signal Attenuation: 6 dB � pressed Output Level: ±3V Figure 2. Tail-End Application for DDS Service ASM-40 High-Speed Short-Range Modem ORDERING SUPPLIED ACCESSORIES • Power cord (for standalone units) ASM-40-1/~/+/j/i • DC adapter plug (for DC-powered High-speed, short-range modem, standalone units only) standalone version ASM-40-1/R/+/j OPTIONAL ACCESSORIES High-speed, short-range modem, CBL-530/449F card version for ASM-MN-214 card Adapter cable converting one DB-25 cage connector into one DB-37 connector Note: When using V.35, X.21, V.36, or one of the Ethernet interface modules in the CIA/$ ASM-MN-214 rack, a special interface Connector interface adapters for the adapter is required. ASM-MN-214 modem rack ~ Specify power supply: $ Specify CIA type: AC for 100 to 240 VAC V35/1 for converting one DB-25 24 for 24 VDC DTE connector into one 34-pin 48 for -48 VDC connector + Specify DTE interface: X21/1 for converting one DB-25 V24 for V.24 interface DTE connector into one DB-15 V35 for V.35 interface connector X21 for X.21 interface ETHERNET for converting one 530 for RS-530 interface DB-25 DTE connector into one 703TB for G.703 Codirectional RJ-45 connector interface, terminal block TB-BNC/214 for converting one connector terminal block line connector 703RJ for G.703 Codirectional into two BNC coax connectors interface, RJ-45 connector 703 for G.703-HDB3 balanced RM-28 Special hardware for mounting one or interface two ASM-40 standalone units in a 703UB for G.703-HDB3 19-inch rack unbalanced interface UTP for IR-ETH module, RJ-45 connector BNC for IR-ETH module, BNC coax connector UTP/Q for IR-ETH/Q module UTP/QN for IR-ETH/QN module IP for IR-IP module www.rad.com International Headquarters j Specify line connector: 24 Raoul Wallenberg Street TB for balanced terminal block Tel Aviv 69719, Israel connector Tel: (972) 3-6458181 Fax: (972) 3-6498250, 6474436 B for balanced DB-15 connector Email: market@rad.com UB for unbalanced BNC coax North America Headquarters connector 900 Corporate Drive Mahwah, NJ 07430 i Specify 1920 for special 1920 Tel: (201) 529-1100 kbps option Toll free: 1-800-444-7234 Fax: (201) 529-5777 Email: market@radusa.com 606-100-08/05  1989–2005 RAD Data Communications Ltd. Specifications are subject to change without prior notice. All other trademarks are the property of their respective holders.