FEATURES
- The BE-1 Balun (coax to twisted pair converter)
enables any E1 equipment with coax interface to operate over two twisted
pairs (4-wire interface), as shown in Figure 1.
- Two BE-1 units back-to-back allow 4-wire ISDN
equipment to operate over existing coax cables (see Figure 2).
- BE-1 is insensitive to the direction of the signal,
allowing transmit and receive lines to be reversed without affecting
operation.
- BE-1 is a miniature, lightweight Balun. It operates
without AC or DC power and provides up to 1000V isolation voltage for
protection against AC and DC overvoltage on the line.
SPECIFICATIONS
· Standards
Supports ITU G.703 pulse mask on unbalanced and balanced
sides
· Data rate: 2.048 Mbps
·
Unbalanced Interface
Line impedance: 75W, unbalanced
Connectors: 2 x BNC (female or male)
(see Ordering)
· Balanced Interface
Line impedance: 120W, balanced
Connector: RJ-45, 8-pin
· Pinout
RJ-45 BNC-1 GND BNC-2
1 Shield
2 Core
3,6 GND
4 Shield
5 Core
7,8 (Not connected)
· Power
Operates without external power supply
· Physical
Length: 50mm/ 2.0 in
Width: 50mm/ 2.0 in
Height: 24mm/ 0.9 in
Weight: 50g / 1.8 oz
· Environment
Temperature:
0-50°C / 32-122°F
Humidity: up to 90%, non-condensing
ORDERING INFO
BE-1/M for BNC male
connectors
BE-1/F for BNC female connectors.
APPLICATION
Figure 1
- ISDN Primary Rate from Carrier
Figure 2
- ISDN over Existing Coax Cables
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