Motorola MC9090-G 用户手册

Technical Specifications

A - 5

Asynchronous character format

Up to 10 bits, including data, start, stop, and parity bits

Asynchronous data rates

Transmission rate fallback through 300 bps

Chipset

Conexant SCM

Compatible public switched 
network jacks

RJ11

Dialing capability

Tone and rotary pulse

Line requirements

Public switched telephone network (PSTN) including international 
connections

Operating environment

Altitude: up to 20,000 ft.

Humidity: 10% to 90% non-condensing

Operating temperature

Operating: 32

o

 to 122

o

F / 0

o

 to 50

o

C

Storage: -4

o

 to 149

o

F / -20

o

 to 65

o

C

Operating modes

Asynchronous, full duplex, automatic and manual call originate

Performance

Line speed up to 33,600 bps

HHC to modem speed (DTE speed) up to 57,600 bps

V.42bis data compression

V.42 LAPM error correction

Current consumption

100 mA active

<10 mA sleep

Pulse dialing rate 
(except where prohibited under 
TBR-21 rules)

10 pulses per second

Pulse dialing duty cycle: 39/61% (US) make-to-break ratio

Ringer equivalence

0.1 dBm

Standards & protocols

Bell 103, Bell 212A, Hayes AT command set, and ITU Vs. 17, 21, 22 A 
& B, 22bis, 23, 25bis, 27 ter, 29, 32, 32bis, 42bis

Tone detected

Dial, busy, ring back, modem answer tones. 

Blind dialing based on time-out periods available for incompatible 
tones.

AC Adapter

9V, 2 amp regulated AC/DC adapter allows unlimited modem use. Do 
NOT substitute an AC adapter; using an incorrect AC power supply 
causes electrical damage to the mobile computer and voids warranty.