Motorola MVME712-13 用户手册

Modem

A-4

Input command format

Asynchronous; ASCII 10-bit or 11-bit upper- and 
lowercase characters (including start, stop, and 
parity bits). Accepts input gross start/stop 
(switching) distortion up to 35%. 

Output format

Same as input format; output character 
distortion less than 3%. 

Dimensions

L = 3.5 in.; W = 2.75 in.; H = .562 in. 

Power requirements

+5 Vdc @ 100 mA maximum. 
-12 Vdc @  25 mA. 
+12 Vdc @  25 mA. 

Environmental requirements

Operating: 0 to 65 degrees C. 
Storage: -40 to 70 degrees C. 
Relative humidity: 0 to 95% noncondensing. 

CertiÞcation

FCC rules, part 68 certiÞed; DOC certiÞed for 
Canadian use. 

Dialer type

Command selection of pulse or DTMF. 

Pulse dialing

Pulse rate: 10 pulses per second +/- 10% 
Duty cycle: 61% +/- 3% or 67% +/- 3%. 

DTMF dialing

Per Bell DTMF speciÞcations. 

DTMF tone pair amplitude 
difference 

Less than 4 dB. 

DTMF composite tone 
transmit level 

-3 dBm +/- 2 dB into 600 Ohm termination. 

Input string storage

Up to 40 commands. 

Answer back tone detector

Frequency 2100 or 2225 Hz, threshold: 
-43 dBm +/- 3 dB. 

Failed call timer

Delay: 30 +/- 1 second. 
Start: from last digit dialed (adjustable). 

Billing delay

2 seconds following off-hook upon answer. 

Call progress messages

OK, connect, connect 600, connect 1200, 
connect 2400, ring, no carrier, error, 
no dial tone, busy, no answer.