Comms Example: GPS Receiver--Cellular Modem--Cellular Phone--Cellular Modem--CPU
GPS Receiver--Cellular Modem--Cellular Phone--Cellular Modem--CPU
Cellular modem: ZyXel U-1496P
Cellular phone: Motorola SUN 1908AC (no longer in production)
Antenna: Directional Yagi antenna
CPU: UNIX (Sun OS 2.3)
Receiver: Trimble 4000SSi
Possible Substitutions (based on site parameters)
Cellular modem: Any modem which meets the suggested minimum requirements on our Cellular Modem page.
Cellular phone: Since the Motorola SUN 1908AC is no longer supported, we suggest you contact cellular phone companies and describe your needs, or contact the Equipment Services Group (supportunavco.org).
CPU: UNAVCO currently supports UNIX or LINUX systems.
1=Straight serial DB25-25
2=RJ11 phone line to cellular link
3=RJ11 phone line
4=Trimble serial 5 pin or 7 pin null cable (p/n 21295 or p/n 21296)
Local (UNIX) modem:
V.32 (4800) protocol
4800 bps DTE speed
DSR always on
DTR always assumed on
CTS/RTS HW flow control
v.42 with MNP4
Remote modem: as local, except modem set to pick up after one ring.
Recommended local (at CPU) Zyxel cellular modem register settings:
Recommended remote (at receiver) Zyxel cellular modem register settings:
Confirm these settings in the receiver’s CONTROL menu:
BAUD RATE/FORMAT: I/O port 1 or 2, 4800 bps, 8-None-1, no HW flow control.
REMOTE PROTOCOL: Data Collector Compatible.
Download software: Trimble Remote Control version 2.201 (15 MAY 1996) for UNIX. All functions of Remote Control software work. Effective receiver file download speed: 4300 bps. [Note: Download rates will vary depending upon site location, local interference, phone line quality, and cellular service.]
This product is used to perform remote control of 4000SSE/SSi - RC receivers. The programs are available for HP-UX, DOS, SunOS 4.1.x, and Sun Solaris 2.x. The following summarizes the functions and utilities provided by the Remote control programs. Refer to the Trimble Remote Control documentation for details on these programs.
|Modem link control||rconn, rdisconn|
|Station/session programming||rstation, rsession|
|File conversion (r00 to DAT)||runpkr00|
|Remote firmware update||rupdate|
|DAT file naming utility||rdatname|