User`s manual

Ewave Stamper User’s Manual V1.0
Copyright © 2001 by Ewave, Inc.13
8 Reference
8.1 Ewave Modem Technical Manual
An extensive technical manual covering all Ewave Radio Modems is available from Ewave’s web site at
http://www.electrowave.com/downloads/Documents/ewave_modem_techman.pdf
8.2 Reading the STAMPER’s LEDs
The table below summarizes the status indicated by the STAMPER’s LEDs:
What it means… Status LED Transmit LED Receive LED
Modem is in Command state Rapid Blink * --- ---
TX Power is On --- ON
TX Power is Off, Modem in command state Rapid Blink * OFF
TX Power is Off, Modem in data state ON OFF ---
Modem is Actively Transmitting Data OFF FLASHING ---
Modem is Actively Receiving Data --- --- FLASHING
California Brownout OFF OFF OFF
* Rapid blink indication added for code version V1.39 or higher. Older versions LED is on solid.
8.3 Pin-out of Modem Data Connector
The pin out for the STAMPER’s RS232 DB9 connector is shown below. This diagram applies to both
“Base” (long chromed antenna) or “Mobile” (short rubber antenna) units.
This pin-out allows direct connection to a standard PC DB9 serial port via a straight-thru cable. When
connecting the Ewave Radio Modem to a PC-peripheral device (e.g., a mouse, trackball, digitizer) as a
drop-in wire replacement, a gender-changer and null-modem are usually required.
When connecting the STAMPER modem for PBASIC debugging or programming, the included BASIC
Stamp Adapters must be used with both the modem attached to the PC and to the BASIC Stamp system.
These Adapters are necessary for the STAMPER modems to properly pass through the control signals used
by the BASIC Stamp software to control the BASIC Stamp device.
8.4 Pin-out of Modem Power Connector
The STAMPER uses a standard 2.1 mm power connector. The center pin is positive (+), and the outer
sleeve is ground or negative (-).