Campbell Scientific DC1765 User Manual
INSTRUCTION MANUAL
DC1765 Cellular Phone Package
Revision: 9/94
Copyright (c) 1987-1994
Campbell Scientific, Inc.
Warranty and Assistance
The DC1765 CELLULAR PHONE PACKAGE is warranted by
CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and
workmanship under nor mal use and service for twelve (12) months from date of
shipment unless specifi ed otherwise. Batteries have no warranty. CAMPBELL
SCIENTIFIC, INC.'s obligation under this warranty is limited to repairing or
replacing (at CAMPBELL SCIENTIFIC, INC.'s option) defective products.
The customer shall assume all costs of removing, reinstalling, and shipping
defective products to CAMPBELL SCIENTIFIC, INC. CAMPBELL
SCIENTIFIC, INC. will return such products by surface carrier prepaid. This
warranty shall not apply to any CAMPBELL SCIENTIFIC, INC. products
which have been subjected to modification, misuse, neglect, accidents of
nature, or shipping damage. This warranty is in lieu of all other warranties,
expressed or implied, including warranties of merchantability or fitness for a
particular purpose. CAMPBELL SCIENTIFIC, INC. is not liable for special,
indirect, incidental, or consequential damages.
Products may not be returned without prior authorization. The following
contact information is for US and International customers residing in countries
served by Campbell Scientific, Inc. directly. Affiliate companies handle repairs
for customers wi thin their territories. Please visi t www.campbellsci.com to
determine which Campbell Scientific company serves your country. To obtain
a Returned Materials Authorization (RMA), contact CAMPBELL
SCIENTIFIC, INC., phone (435) 753-2342. After an applications engineer
determines the nature of the problem, an RMA number will be issued. Please
write this number clearly on the outside of the shipping container.
CAMPBELL SCIENTIFIC's shipping address is:
CAMPBELL SCIENTIFIC, INC.
RMA#_____
815 West 1800 North
Logan, Utah 84321-1784
CAMPBELL SCIENTIFIC, INC. does not accept collect calls.
DC1765 CELLULAR PHONE PACKAGE OPERATOR'S MANUAL
1. INTRODUCTION
Telecommunication using cellular telephones is
a convenient alternative to standard phone or
RF telemetry. In areas with cellular coverage, it
has an advantage over ordinary phone lines
where the lines are not established and would
be costly to install. The advantage over an
independent RF telemetry system is that the
company providing the cellular service takes
care of the FCC licensing and maintenance of
repeater stations.
To determine if a site has sufficient cellular
coverage, a user can usually borrow a portable
cellular phone and visit the site. If a standard
cellular phone can place a call from the site with
good sound clarity and good signal strength the
site should have no problems using cellular
telemetry. If a Yagi antenna is being used, it
would be a good idea to have the cellular phone
company locate their cellular tower on a map so
the antenna can be pointed towards the tower.
Campbell Scientific's DC1765 Cellular Phone
Package includes:
Motorola S1765 Transceiver
Campbell Scientific DC112 Modem
Crydom Relay D1D07
Mounting bracket and wiring
An appropriate power supply and antenna must
be selected for each station.
The Motorola S1765 Cellular Connection
Transceiver has a standard RJ11C telephone
interface. A standard RJ11C cable connects the
DC112 Modem directly to the transceiver. A
computer equipped with the PC208 Datalogger
Support Software and a Hayes compatible
phone modem connected to a standard phone
line is used to call the cellular equipped stations
(see Figure 1-1).
The transceiver does not have a handset, but if
the user wishes to place a voice call, any
standard touchtone telephone can be
connected. However, the DC112 and a
telephone cannot be connected to the
transceiver at the same time. Programmable
phones will not work with the transceiver.
2. SPECIFICATIONS
S1765 TRANSCEIVER
Dimensions: 2.0 x 3.5 x 8.5 inches
Operating Temperature: -30 to 60 °C
Average current drain
standby: 0.38 A
on line: 2.1 A
Supply voltage: 10.9 - 16.3 VDC
Antenna Termination: Mono UHF
D1D07 RELAY
Control Voltage: 3.5-32.0 VDC
Control Current: <1.6 mA @ 5 VDC
Output Rating: 7 A @ 100 VDC
FIGURE 1-1. Cellular Telecommunications
1
Loading...