1. Introduction 
1.1  HELLO 
Whether in extreme cold in Antarctica, scorching heat in Death Valley, salt spray 
from the Pacific, micro-gravity in space, or the harsh environment of your office, 
Campbell Scientific dataloggers support research and operations all over the 
world. Our customers work a spectrum of applications, from those more complex 
than any of us imagined, to those simpler than any of us thought practical. The 
limits of the CR800 are defined by our customers. Our intent with this operator's 
manual is to guide you to the tools you need to explore the limits of your 
application. 
You can take advantage of the advanced CR800 analog and digital measurement 
features by spending a few minutes working through the Quickstart
 (p. 35) and the 
Overview 
(p. 55). For more demanding applications, the remainder of the manual 
and other Campbell Scientific publications are available. If you are programming 
with CRBasic, you will need the extensive help available with the CRBasic Editor 
software. Formal CR800 training is also available from Campbell Scientific. 
This manual is organized to take you progressively deeper into the complexity of 
CR800 functions. You may not find it necessary to progress beyond the 
Quickstart or Overview. Quickstart is a cursory view of CR800 data-acquisition 
and walks you through a procedure to set up a simple system. Overview
 reviews 
salient topics that are covered in-depth in subsequent sections and appendices. 
Review the exhaustive table of contents to learn how the manual is organized, 
and, when looking for a topic, use the index and PDF reader search. 
More in-depth study requires other Campbell Scientific publications, most of 
which are available on-line at www.campbellsci.com. Generally, if a particular 
feature of the CR800 requires a peripheral hardware device, more information is 
available in the manual written for that device. 
Don't forget the Glossary 
(p. 489) when you run across a term that is unfamiliar. 
Many specialized terms are hyperlinked in this manual to a glossary entry. 
If you are unable to find the information you need, need assistance with ordering, 
or just wish to speak with one of our many product experts about your application, 
please call us: 
 
Technical Support  (435) 227-9100 
Sales and Application 
Engineering 
(435) 227-9120 
Orders  (435) 227-9090 
Accounts Receivable  (435) 227-9092 
Repairs  (435) 227-9105 
General Inquiries  (435) 227-9000