
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. Standard operating range is -25° to +50°C; an optional extended
range of -55° to +85°C is available.
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 H8S Renesas Microcontroller with 32-bit
internal CPU architecture
• Temperature compensated real-time clock
• Background system calibration for accurate mea-
surements 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 memory and clock ensuring
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
Measurement and Control Module
The module measures sensors, drives direct commu-
nications and telecommunications, reduces data, con-
trols external devices, and stores data and programs in
on-board, non-volatile storage. The electronics are RF
shielded and glitch protected by the sealed, stainless
steel canister. A battery-backed clock assures accurate
timekeeping. The module can simultaneously provide
measurement and communication functions. The on-
board, BASIC-like programming language supports
data processing and analysis routines.
Wiring Panel
The CR1000WP is a black, anodized aluminum wiring
panel that is compatible with all CR1000 and CR1000-4M
modules. The wiring panel includes switchable 12 V,
redistributed analog grounds (dispersed among analog
channels rather than grouped), unpluggable terminal
block for 12 V connections, gas-tube spark gaps, and
12 V supply on pin 8 to power our COM-series phone
modems and other peripherals. The control module
easily disconnects from the wiring panel allowing field
replacement without rewiring the sensors. A description
of the wiring panel's input/output channels follows.
{
Removable Power
Terminal—simplifies
connection to external
power supply.
Input/Output Connections—
Individually configured for
ratiometric resistive bridge,
thermocouple, switch closure,
high frequency pulse, low-level
ac, serial sensors, and more.
Peripheral Port—one 40-pin port interfaces with
the CFM100 CompactFlash® module, which allows
data to be stored on a CompactFlash card.
CS I/O Port—connects to
data transfer and storage
peripherals such as phone,
RF, short-haul, and multi-
drop modems.
Computer RS-232—
provides a 9-pin electri-
cally isolated DCE port.
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