Multitech MTSMC-C-N3 User Manual download pdf (Page 9)

CHAPTER 3 –SPECIFICATIONS

SocketModem CDMA MTSMC-C2 Device Guide

Electrical Characteristics Other Pins

Signal Name

VIL

VIH

VOL

VOH

Min

Max

Min

Max

Min

Max

Min

Max

J24

-RESET

0.8

2.0

J26

GND

J41

GND

J58

-LED LINK

0.45

2.85

3.3

J61

VCC

J63

GND

Pinout Specifications

Signal Name

Logic Level Voltage

I/O

Description

J24

–RESET

3.3 – 5.0

Device reset (active low)

J26

GND

Ground

J33

–RTS

5.0

Request to send (active low)

J34

–RXD

5.0

Received data (active low)

J35

–TXD

5.0

Transmitted data (active low)

J36

–RI

5.0

Ring indicator (active low)

J37

–DSR

5.0

Data set ready (active low)

J38

–CTS

5.0

Clear to send (active low)

J39

–DCD

5.0

Data carrier detect (active low)

J40

–DTR

5.0

Data terminal ready (active low)

J41

GND

Ground

J58

–LED LINK

3.3

Link status (active low, can sink up to 150mA)

J61

VCC

5.0

PWR

DC input power

J63

GND

Ground

A hyphen (-) indicates a range of acceptable logic levels.

Pin 58

Note: Pin 58 may or may not be available on some SocketModems.

Pin 58 LED Mode

Operating Status

OFF

Subscriber Carrier Mode is OFF or running in SLEEP or ALARM mode.

600 ms ON/600ms OFF

No PIN entered, network search in progress, ongoing user authentication, or

network login in progress.

75 ms ON/75 ms OFF/75 ms ON

3 s OFF

Flashing or Blinking

One or more CDMA contexts activated. Indicates CDMA data transfer: When a

transfer is in progress, the LED goes on within 1 second after data packets were

exchanged. Flash duration is approximately 0.5 s.

Connected to remote party or parameter exchange while call is set up or

disconnected.

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Multitech MTSMC-C-N3 User Manual Page 9

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