1.0 Specifications

 

V.29

QAM at 9600, 7200, and 4800 bps

 

V.27

8-phase DPSK at 4800 and 2400 bps

 

V.26

4-phase DPSK at 2400 and 1200 bps

 

V.23

FSK at 1200/75 bps, full duplex

 

V.22 bis:

QAM at 2400 bps; bandsplit, full duplex

 

V.22:

DPSK at 1200 bps; bandsplit, full duplex

 

V.21:

PSK at 0 to 300 bps; bandsplit, full duplex

Autodialer —

Automatic dialing using rotary pulses or tone

 

signaling; supports Hayes AT commands or

 

V.25 bis commands

 

Answer Modes —

Automatic and manual answer

Equalization —

Receiver:

 

Automatic adaptive equalization

 

Transmitter:

Selectable compromise equalization

 

(4 types)

 

 

 

Line Requirement —

Unconditioned

 

Transmit Timing —

Internal, external, or slaved to receive clock

Transmit Level —

Leased:

 

Selectable, 0 to -15 dBm

 

Dial:

 

Permissive or programmable

Interface —

Terminal:

 

RS-232C/D, CCITT V.24/V.28

 

Dialup Line:

8-pin RJ-45 modular connector with

 

 

 

A/A1 and MI/MIC control

 

Leased Line:

6-pin RJ-11 modular connector

 

Diagnostic:

8-pin RJ-45 modular connector

Carrier Detect Threshold —

Leased line:

-26, -33, or -43 dBm; selectable

 

Dial line:

 

-34, 41, or -51 dBm; selectable

Test Capabilities —

Analog loopback, analog loopback self-test,

 

self-test with errors, digital loopback, remote

 

digital loo.pback self-test, external analog

 

loopback (4-wire), external analog loopback

 

self-test (4-wire); front-panel TIA/EIA or front-

 

panel Hayes control

 

AC Power —

Stand-alone:

90-132 VAC, 60 Hz ±5%

 

Rackmount:

117/220 VAC

Power Consumption —

13 watts

 

 

 

Heat Generation —

44 BTU/hr

 

 

Ringer Equivalence —

0.7 B

 

 

 

Environment —

Ambient temp:

32 to 120°F (0 to 49°C)

 

Storage temp.: 20 to 180°F (-7 to 82°C)

 

Relative humidity:

5 to 90% at 24°C (75°F)

 

 

 

 

non-condensing

Size (stand-alone unit) —

2.5"H x 9.7"W x 10.1"D (6.4 x 24.6 x 25.7 cm)

Weight —

Stand-alone:

 

4.1 lb (1.9 kg)

 

Rackmount:

 

2 lb. (0.9 kg)

7

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Black Box MD885AE-R2, MD885C-R2, MD885A-R3, 34336 user manual Specifications

MD885C-R2, MD885A-R3, MD885AE-R2, 34336 specifications

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