Specifications

FOM-40 Installation and Operation Manual Chapter 1 Introduction
Technical Specifications 1-5
The test can be carried out in local analog loopback, in remote digital loopback or
in normal point-to-point operation opposite a remote FOM-40 modem.
1.4 Technical Specifications
Optical
Interface
Transmission Line
Dual fiber optical cable
Specifications and
Ranges
See Table 1-1
DTE Interface
Type
• V.24 (RS-232), 25-pin D-type, female
• RS-530 (V.11/RS-422), 25-pin D-type, female
• V.35, 34-pin, female
• X.21, 15-pin D-type, female
• V.36, 37-pin D-type, female (via adapter cable)
• IR-G.703/CO (64 kbps), 5-clip terminal block or RJ-45
• IR-ETH/QV, RJ-45
Baud Rate
56, 64, 96, 112, 128, 192, 256, 384, 512, 768, 1024,
1536, 1544, 2048 kbps
(V.24: up to 128 kbps; IR-G.703/CO: 64 kbps)
Timing
Derived from 3 alternative sources:
• Internal oscillator
• External from the DTE
• Receive clock derived from the receive signal
Diagnostics
Loopbacks
Local Loopback (LLB): activated by a front panel
pushbutton or by the DTE interface signal (V.35, V.24,
RS-530 and V.36)
Remote Loopback (RLB): activated by a front panel
pushbutton or by the DTE interface connector signal (V.35,
V.24, RS-530 and V.36)
Local Digital Loopback (DIG): activated by a front panel
pushbutton
BER Testing
Pattern generator and tester
Indicators
TD (yellow)
Transmit Data
RD (yellow)
Receive Data
RTS (yellow)
Request to Send
DCD (yellow)
Data Carrier Detect
TEST (yellow)
Test
PWR (green)
Power