Chapter 2. Installation ARC-101 Installation & Operation Manual
2-10 ARC-101 Modules
E1 and E1/LTU
Modules
The E1 link interface (Coax/UTP), as well as RX/TX ground reference, can be
determined by jumpers on the module (see Figure 2-16).
Figure 2-15 E1 Module Front Panel
Connector: BNC (RJ-45)
Used with: Coax (UTP)
Protocols supported: E1
Coding method: HDB3
Impedance: 75 Ω (120 Ω)
Receive level (with LTU): 0 to -34 dB
Receive level (without LTU): 0 to -12 dB
Transmit level balanced: 3v ± 10%
Transmit level unbalanced: 2.37v ± 10%