Specifications

Installation and Operation Manual Chapter 1 Introduction
ASMi-31 Ver. 3.0 Technical Specifications 1-9
Protocol Synchronous or asynchronous
Data Rates • Synchronous: 1.2, 2.4, 4.8, 9.6, 16, 19.2, 32, 38.4,
48, 64, 128 kbps
• Asynchronous: 1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 57.6,
115.2 kbps
16, 32, 57.6, 115.2 and 128 kbps are applicable only with RAD proprietary rate
adaptation method. The modem operates also at 56 kbps (V.110 adaptation
only).
Async Format • Number of data bits – 5/6/7/8 bits,
• Parity – odd, even or no parity,
• Number of stop bits – 1 or 2
5 bits and 6 bits are not available for the RAD proprietary rate adaptation mode.
Clock Combinations INT–RCV, RCV–INT, EXT AUTO–RCV, RCV–EXT AUTO
Timing
Master Clock • Internal oscillator is used to receive data from the
DTE and to transmit data to the line.
• External clock from the DTE is used to receive data
from DTE and to transmit data to the line.
If the X.21 interface is used, the same clock is used
to receive and transmit data.
Slave Clock • Receive clock derived from the receive signal, looped
back as a transmit clock
Diagnostics
V.54 Loopbacks Local loopback (LLB): activated by management
software or by the DTE interface signal (V.24, V.35 and
RS-530 only)
Remote loopback (REM): activated by management
software or by the DTE interface connector signal (V.24,
V.35, and RS-530 only)
Internal BERT Built-in pattern generator and tester, complies with
ITU V.52
LEDs Check Activates the local LEDs for a 3-second period, from the
front panel
Indicators
PWR (green)
RTS (yellow)
TD (yellow)
RD (yellow)
DCD (yellow)
TST (red)
ALM (red)
SYNC ((green/red)
Power
Request to Send
Transmit Data
Receive Data
Data Carrier Detect
Test
Alarm
Sync Status
Note
Note