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CHAPTER 1: Introduction and Description
Receiver Sensitivity -43 dBm under worst case conditions
AGC Dynamic Range 43 dB
Interface EIA RS-232C/ITU V.24
Connectors Both models: (1) DB25 female for RS232C,
(1) RJ-11 female for phone hadset, (1)
Power inlet;
336+ (MD1640A) model only: (1) RJ-11
female for dialup line, (1) RJ-11 female
for 2- or 4-wire leased line;
336 (MD1641A) model only: (1) RJ-11 female
for dialup line or 2-wire leased line
Diagnostics Power-on Self Test, Local Analog Loop,
Local Digital Loop, Remote Digital Loop,
Back-to-Back Test.
Indicators All front-mounted LEDs:
Both models: Transmit Data, Receive Data,
Carrier Detect, Speed Indicators, Off Hook,
Terminal Ready, Error Correction, and Fax;
336+ (MD1640A) model only: Error
Controls Toggle switches for Power and for
Voice/Data with Originate or Answer, DIP
Switches for various modem options, and
volume knob
Speaker Speaker for call progress monitoring
Operating Temperature 0˚ to 50˚C (32˚ to 120˚F)
Power Requirements 115-VAC, 60Hz, 0.3amp (2-prong outlet-
mounted transformer)
Dimensions
1.38"H x 6.2"W x 9"D (3.5 x 15.6 x 22.9 cm)
Weight 1.6 pounds (0.7 kg) without transformer,
2.6 pounds (1.2 kg) with transformer