RAD Data comm LRS-24 Spezifikationen PDF herunterladen (Seite 22)

Chapter 1 Introduction Installation and Operation Manual

1-8 Technical Specifications ASM-40CD Ver. 1.0

Table 1-2. ASM-40CD Configurable Parameters

Parameter Function

Data rate Transmission data rate (in kbps) of the local modem

Clock source Clock source of the local modem

Loop & BERT Type of loopback and BERT

LED test Test of front panel LEDs

Local loopback Enable/disable local loopback (LLB) from DTE

Remote loopback Enable/disable remote loopback (RLB) from DTE

Line code AMI, HDB3, B8ZS

Transmit impedance 120Ω, 100Ω or 75Ω

Carrier control On, Control

Phantom option On, Off

Detailed instructions for configuring these parameters from an ASCII terminal are

provided in

Chapter 3

and

Appendix D

1.4 Technical Specifications

Line Interface

Number of Channels

Two

Type

4-wire unconditioned dedicated line (two twisted pairs)

Coding

User-selectable to HDB3, AMI or B8ZS

Framing

Unframed

Transmit Level

According to G.703

Baud Rates

2048, 1544, 1536, or 1920 kbps

Impedance

For 2048 and 1920 kbps:

• 75Ω, unbalanced

• 120Ω, balanced

1544 and 1536 kbps:

• 100Ω, balanced

Return Loss

Better than 12 dB

Attenuation

Up to 40 dB for approximate range up to 1.75 km (1 mile)

Connector

RJ-45

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 75 76

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