Specifications

Installation and Operation Manual Chapter 1 Introduction
FOM-E1/T1 Ver. 2.0 Technical Specifications 1-5
1.4 Technical Specifications
E1/T1 Interface
Transmission Rates E1: 2.048 Mbps
T1: 1.544 Mbps
Interface User-selectable:
• E1: 120Ω balanced or 75Ω unbalanced
• T1: 100Ω balanced
Line Code E1: HDB3, B8ZS or AMI
Connectors Balanced: RJ-45
Unbalanced: two BNC coax
Optical
Interface
Technical
Specifications
See Table 1-1
Alarm Relay
Type Dry contacts
Operation Normally Open and Normally Closed, using different pins
Maximum Ratings 1A, 60 VDC, 30 VAC
Connector 9-pin, D-type, female
Indicators
POWER ON – The unit is powered up
LLB ON – The unit is in local loopback mode
RLB ON – The unit is in remote loopback mode
ELEC LOSS ON – The electrical interface input is below G.703
electrical levels
ELEC AIS ON – An “All 1s” string is received at the electrical
interface
OPTICAL LOSS ON – Bit error rate of the received signal from the optical
interface is 10
-6
or worse
OPTICAL AIS ON – An “All 1s” string is received at the optical interface
Physical
Height 43.7 mm (1.7 in)
Width 240 mm (9.4 in)
Depth 170.5 mm (6.7 in)
Weight 0.5 kg (1.1 lb)