Antenna/Rf Specifications; Interfaces; Leds; At Command Information - Multitech MTCBA-C-U-N1 User Manual

Antenna/RF Specifications

Frequency
Impedance
VSWR
Typical Radiated Gain

Interfaces

The Wireless MultiModem has several interfaces:
LED function indicating operating status
External antenna (via SMA connector)
USB connector
Microphone and speaker (via handset jack)

LEDs

TD Transmit Data. Light is on when modem is transmitting data.
RD Receive Data. Light is on when modem is receiving data.
CD Carrier Detect. Light is on when data connection has been established.
LS Line Status.
Continuous "on" state indicates that the wireless modem is not registered on the network.
Flashing state indicates registration on network.
Off state. Modem is off (not ready) or in download mode.
TR Terminal Ready. Commonly called "Data Terminal Ready." This is a readiness signal from the PC.
PWR Power. Light is on continuously to when power on. (On the IP model, this LED flashes when power is
on.

AT Command Information

AT commands for the CDMA wireless modem are published in a separate CDMA AT Commands Reference
Guide included on the MultiModem CD and posted on the Multi-Tech web site.
IP commands for CDMA modems are also published in a separate CDMA AT Commands Reference Guide
included on the MultiModem CD and posted on the Multi-Tech web site.
Multi-Tech Systems, Inc. MultiModem CDMA USB Wireless Modem User Guide
CDMA 800
824 to 894 MHz
50 ohms
<2
0 dBi on azimuth plane
LED Indicators
Chapter 1 – Product Description and Specifications
CDMA 1900
1850 to 1900 MHz
8