NMX920 OEM Integrators Guide
Page 19 of 21
10. Development Tools
10.1. NMD920 Modem Evaluation Kit
The Nomadic Communications NMD920 Development Interface provides the
systems integrator a convenient platform from which to evaluate the operation
and performance of NMX920 Mobitex® Radio Packet Modems. The NMD920
provides an optimised power supply for the NMX920 series modems, socket for
antenna mounting and PC serial interface.
Key Features
q
Power control and regulation for the modem
q
Modem plugs directly onto NMD920.
q
Connection to PC via 9 pin ‘D’ connector.
q
TNC connector for mounting antenna, or coaxial cable to external antenna or
test instruments.
q
LED indicators for modem status and power integrity.
NMD-920
Evaluation Kit
MODEM ON
NETWORK
CONTACT
TRANSMIT
EXPRESS
MODE
5.5mm barrel
socket (centre
positive)
Right angle
female DB-9
Push on/off
power switch
Johnson 135-
3801-201 straight
plug receptacle
POWER
APPLIED
Plated mounting hole x 4
NMX920
Rubber foot x 4
Board mount
straight TNC
female socket
10.2. ModmTest
Radio Modem Test Utility, Version 8.30. Copyright© RAM Mobile Data (May 1995)
