Features
• 2 Mbytes standard memory; 4 Mbytes optional memory
• Program execution rate of up to 100 Hz
• CS I/O and RS-232 serial ports
• 13-bit analog to digital conversions
• 16-bit microcontroller with 32-bit internal CPU
architecture
• Temperature compensated real-time clock
• Background system calibration for accurate
measurements over time and temperature changes
• Single DAC used for excitation and measurements
to give ratio metric measurements
• Gas Discharge Tube (GDT) protected inputs
• Data values stored in tables with a time stamp and
record number
• Battery-backed SRAM and clock that ensure data,
programs, and accurate time are maintained while
the CR1000 is disconnected from its main power
source
• Measures intelligent serial sensors without using
an SDM-SIO4
Storage Capacity
The CR1000 has 2 Mbyte of FLASH memory for the
Operating System. The standard CR1000 provides
2 Mbytes battery-backed SRAM for CPU usage, pro-
gram storage, and data storage; an optional version
provides 4 Mbytes of SRAM. Data is stored in a table
format. The storage capacity of the CR1000 can be
increased by using a CompactFlash® card.
12-Volt Powered
Any 12 Vdc source can power the CR1000; it typically
uses our BPALK or PS100 power supply. The BPALK
consists of eight D-cell batteries, and the PS100 includes
a sealed rechargeable battery that can be float-charged
with a solar panel or ac power.
Datalogger Programming
The on-board, BASIC-like programming language sup-
ports data processing and analysis routines. Compatible
software includes Short Cut, PC400, and LoggerNet.
Short Cut generates straightforward datalogger pro-
grams in four steps. PC400 and LoggerNet software
support datalogger program creation/editing, data
retrieval, and real-time monitoring. LoggerNet includes
the Transformer application that converts existing
CR10X Edlog programs to CR1000 CRBasic programs.
Input Output Terminals
Analog Inputs: Eight differential (16 single-ended)
channels measure voltage levels. Resolution on the
most sensitive range is 0.67 µV.
Pulse counters: Two pulse channels can count pulses
from high level (5 V square wave), switch closure, or
low level ac signals.
Switched voltage excitations: Three outputs provide
precision excitation voltages for resistive bridge mea-
surements.
Digital I/O ports: Eight ports are provided for frequen-
cy measurements, digital control, and triggering. Three
of these ports can also be used to measure SDM devices.
Switched 12 Volt: This terminal provides unregulated
12 V that can be switched on and off under program
control.
RS-232 port: A PC or laptop can be connected to this
9-pin port via an RS-232 cable.
CS I/O port: Data transfer peripherals that require
power from the datalogger can be connected to this port
via a cable. This port is also used for connecting the
datalogger to a PC via an SC32B interface when optical
isolation is required.
Peripheral Port: One 40-pin port interfaces with the
CFM100 CompactFlash® module.
CR1000 Measurement and Control System
The CR1000 provides precision measurement capabilities in a rugged, battery-operated package. It consists of a
measurement and control module and a wiring panel.
The CR1000’s power consumption and packaging are optimized
for unattended network applications.
(394 paginas)
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