Electrical specifications are valid over a -40 to +70 °C, non-
condensing environment, unless otherwise specified. Extended
electrical specifications (noted as XT in specifications) are valid
over a -55 to +85 °C non-condensing environment.
Recalibration is recommended every three years. Critical
specifications and system configuration should be confirmed
with Campbell Scientific before purchase.
System specifications 1
Physical specifications 1
Power requirements 1
Power output specifications 2
2
4
4
Analogue measurement specifications
Pulse measurement specifications
Digital input/output specifications
Communications specifications
5
Standards compliance specifications 5
Warranty 5
Terminal functions 6
System specifications
Processor: Renesas RX63N (32-bit with hardware FPU, running
at 100 MHz)
Memory:
l Total onboard: 128 MB of flash + 4 MB battery-backed
SRAM
o
Data storage: 4 MB SRAM + 72 MB flash
(extended data storage automatically used for
auto-allocated Data Tables not being written to
a card)
o
CPU drive:30 MB flash
o
OS load:8 MB flash
o
Settings:1 MB flash
o
Reserved (not accessible): 10 MB flash
l Data storage expansion: Removable microSD flash
memory, up to 16 GB
Program Execution Period: 1 ms to 1 day
Real-Time Clock:
l Battery backed while external power is disconnected
l Resolution: 1 ms
l Accuracy: ±3 min. per year, optional GPS correction to
±10 µs
Wiring Panel Temperature: Measured using a 10K3A1A
BetaTHERM thermistor, located between the two rows of
analogue input terminals.
Physical specifications
Dimensions: 23.8 x 10.1 x 6.2 cm (9.4 x 4.0 x 2.4 in); additional
clearance required for cables and wires.
Weight/Mass: 0.86 kg (1.9 lb)
Case Material: Powder-coated aluminium
Power requirements
Protection: Power inputs are protected against surge, over-
voltage, over-current, and reverse power. IEC 61000-4 Class 4
level.
Power In Terminal:
l Voltage Input: 10 to 18 VDC
l Input Current Limit at 12 VDC:
o
4.35 A at -40 °C
o
3 A at 20 °C
o
1.56 A at 85 °C
l 30 VDC sustained voltage limit without damage.
USB Power: Functions that will be active with USB5 VDC include
sending programs, adjusting data logger settings, and making
some measurements. If USB is the only power source, then the
CS I/O port and the 5V, 12V, and SW12 terminals will not be
operational.
Internal Lithium Battery: AA, 2.4 Ah, 3.6 VDC (Tadiran TL
5903/S) for battery-backed SRAM and clock. 3-year life with
no external power source.
Average Current Drain:
Assumes 12 VDC on POWER IN terminals.
l Idle: <1 mA
l Active 1 Hz Scan: 1 mA
l Active 20 Hz Scan: 55 mA
l Serial (RS-232/RS-485): Active + 25 mA
l Ethernet Power Requirements:
o
Ethernet 1 Minute: Active + 1 mA
o
Ethernet Idle: Active + 4 mA
o
Ethernet Link: Active + 47 mA
© 2014, 2021
Campbell Scientific
January 27, 2021
CR1000X Specifications
Vehicle Power Connection: When primary power is pulled from
the vehicle power system, a second power supply OR charge
regulator may be required to overcome the voltage drop at
vehicle start-up.
Power output specifications
System power out limits (when powered with
12VDC)
Temperature (°C) Current Limit
1
(A)
–40° 4.53
20° 3.00
70° 1.83
85° 1.56
1
Limited by self-resetting thermal fuse
12 V and SW12 V power output terminals
12V, SW12-1, and SW12-2: Provide unregulated 12 VDC power
with voltage equal to the Power Input supply voltage. These
are disabled when operating on USB power only.
SW12 current limits
Temperature (°C) Current Limit
1
(mA)
–40° 1310
0° 1004
20° 900
50° 690
70° 550
80° 470
1
Thermal fuse hold current.
5 V and 3.3 V
5V: One regulated 5 V output. Supply is shared between the 5V
terminal and CS I/O DB9 5 V output.
l Voltage Output: Regulated 5 V output (±5%)
l Current Limit: 230 mA
C as power output
l C Terminals:
o
Output Resistance (R
o
): 150 Ω
o
5 V Logic Level Drive Capacity: 10 mA @ 3.5 VDC
o
3.3 V Logic Level Drive Capacity: 10 mA @ 1.8
VDC
CSI/O pin 1
5 V Logic Level Max Current: 200 mA
Voltage excitation
VX: Four independently configurable voltage terminals (VX1-
VX4). When providing voltage excitation, a single 16-bit DAC
shared by all VX outputs produces a user-specified voltage
during measurement only.VX terminals can also be used to
supply a selectable, switched, regulated 3.3 or 5 VDC power
source to power digital sensors and toggle control lines.
Range Resolution Accuracy
Maximum
Source/Sink
Current
1
Voltage
Excitation
±4 V 0.06 mV
±(0.1% of
setting + 2
mV)
±40 mA
Switched,
Regulated
+3.3 or
5 V
3.3 or 5 V ±5% 50 mA
1
Exceeding current limits causes voltage output to become
unstable. Voltage should stabilize when current is reduced to
within stated limits.
Analogue measurement specifications
16 single-ended (SE) or 8 differential (DIFF) terminals
individually configurable for voltage, thermocouple, current
loop, ratiometric, and period average measurements, using a
24-bit ADC. One channel at a time is measured.
Voltage measurements
Terminals:
l Differential Configuration: DIFF 1H/1L – 8H/8L
l Single-Ended Configuration: SE1 – SE16
Input Resistance: 20 GΩ typical
Input Voltage Limits: ±5 V
Sustained Input Voltage without Damage: ±20 VDC
DC Common Mode Rejection:
l > 120 dB with input reversal
l ≥ 86 dB without input reversal
Normal Mode Rejection: > 70 dB @ 60 Hz
Input Current @ 25 °C: ±1 nA typical
Filter First Notch Frequency (f
N1
) Range: 0.5 Hz to 31.25 kHz
(user specified)
CR1000X Specifications | January 27, 2021 2
Analogue Range and Resolution:
Differential
with Input
Reversal
Single-Ended
and Differential
without Input
Reversal
Notch
Frequency
(f
N1
) (Hz)
Range
1
(mV)
RMS
(µV)
Bits
2
RMS
(µV)
Bits
2
15000
±5000
±1000
±200
8.2
1.9
0.75
20
20
19
11.8
2.6
1.0
19
19
18
50/60
3
±5000
±1000
±200
0.6
0.14
0.05
24
23
22
0.88
0.2
0.08
23
23
22
5
±5000
±1000
±200
0.18
0.04
0.02
25
25
24
0.28
0.07
0.03
25
24
23
1
Range overhead of ~5% on all ranges guarantees that full-scale
values will not cause over range
2
Typical effective resolution (ER) in bits; computed from ratio of
full-scale range to RMS resolution.
3
50/60 corresponds to rejection of 50 and 60 Hz ac power mains
noise.
Accuracy (does not include sensor or measurement noise):
l 0 to 40 °C: ±(0.04% of measurement + offset)
l –40 to 70 °C: ±(0.06% of measurement + offset)
Voltage Measurement Accuracy Offsets:
Typical Offset (µV RMS)
Range
(mV)
Differential
with Input
Reversal
Single-Ended or
Differential
without Input Reversal
±5000 ±0.5 ±2
±1000 ±0.25 ±1
±200 ±0.15 ±0.5
Measurement Settling Time: 20 µs to 600 ms; 500 µs default
Multiplexed Measurement Time:
Measurement time = INT(multiplexed measurement time •
(reps+1) + 2ms
Differential
with Input
Reversal
Single-Ended or
Differential
without Input Reversal
Example fN1
1
(Hz)
Time
2
(ms) Time
2
(ms)
15000 2.04 1.02
60 35.24 17.62
Differential
with Input
Reversal
Single-Ended or
Differential
without Input Reversal
Example fN1
1
(Hz)
Time
2
(ms) Time
2
(ms)
50 41.9 20.95
5 401.9 200.95
1
Notch frequency (1/integration time).
2
Default settling time of 500 µs used.
Resistance measurement specifications
The data logger makes ratiometric-resistance measurements
for four- and six-wire full-bridge circuits and two-, three-, and
four-wire half-bridge circuits using voltage excitation.
Excitation polarity reversal is available to minimize dc error.
Accuracy:
Assumes input reversal for differential measurements
RevDiff and excitation reversal RevEx for excitation voltage
<1000 mV. Does not include bridge resistor errors or sensor
and measurement noise.
l 0 to 40 °C: ±(0.01% of voltage measurement + offset)
l –40 to 70 °C: ±(0.015% of voltage measurement +
offset)
l –55 to 85 °C (XT): ±(0.02% of voltage measurement +
offset)
Period-averaging measurement specifications
Terminals: SE1-SE16
Accuracy: ±(0.01% of measurement + resolution), where
resolution is 0.13 µs divided by the number of cycles to be
measured
Ranges:
l Minimum signal centered around specified period
average threshold.
l Maximum signal centered around data logger ground.
l Maximum frequency = 1/(2 * (minimum pulse width)) for
50% duty cycle signals
Gain
Code
Op-
tion
Volt-
age
Gain
Min-
imum
Peak to
Peak
Signal
(mV)
Max-
imum
Peak to
Peak
Signal
(V)
Min-
imum
Pulse
Width
(µs)
Max-
imum
Fre-
quency
(kHz)
0 1 500 10 2.5 200
1 2.5 50 2 10 50
2 12.5 10 2 62 8
3 64 2 2 100 5
CR1000X Specifications | January 27, 2021 3
Current-loop measurement specifications
The data logger makes current-loop measurements by
measuring across a current-sense resistor associated with the
RS-485 resistive ground terminal.
Terminals: RG1 and RG2
Maximum Input Voltage: ±16 V
Resistance to Ground: 101 Ω
Current Measurement Shunt Resistance: 10 Ω
Maximum Current Measurement Range: ±80 mA
Absolute Maximum Current: ±160 mA
Resolution: ≤ 20 nA
Accuracy: ±(0.1% of reading + 100 nA) @ -40 to 70 °C
Pulse measurement specifications
Two inputs (P1-P2) individually configurable for switch closure,
high-frequency pulse, or low-level AC measurements. See also
Digital input/output specifications (p. 4). Each terminal has its
own independent 32-bit counter.
NOTE:
Conflicts can occur when a control port pair is used for
different instructions (TimerInput(), PulseCount(),
SDI12Recorder(), WaitDigTrig()). For example, if
C1 is used for SDI12Recorder(), C2 cannot be used for
TimerInput(), PulseCount(), or WaitDigTrig().
Maximum Input Voltage: ±20 VDC
Maximum Counts Per Channel: 2
32
Maximum Counts Per Scan: 2
32
Input Resistance: 5 kΩ
Accuracy: ±(0.02% of reading + 1/scan)
Switch closure input
Terminals: C1-C8
Pull-Up Resistance: 100 kΩ to 5 V
Event: Low (<0.8V) to High (>2.5 V)
Maximum Input Frequency: 150 Hz
Minimum Switch Closed Time: 5 ms
Minimum Switch Open Time: 6 ms
Maximum Bounce Time: 1 ms open without being counted
High-frequency input
Terminals: C1-C8
Pull-Up Resistance: 100 kΩ to 5 V
Event: Low (<0.8V) to High (>2.5 V)
Maximum Input Frequency: 250 kHz
Low-level AC input
Minimum Pull-Down Resistance: 10 kΩ to ground
DC-offset rejection: Internal AC coupling eliminates DC-offset
voltages up to ±0.05 VDC
Input Hysteresis: 12 mV at 1 Hz
Low-Level AC Pulse Input Ranges:
Sine wave (mV RMS) Range (Hz)
20 1.0 to 20
200 0.5 to 200
2000 0.3 to 10,000
5000 0.3 to 20,000
Digital input/output specifications
Terminals configurable for digital input and output (I/O)
including status high/low, pulse width modulation, external
interrupt, edge timing, switch closure pulse counting, high-
frequency pulse counting, UART
1
, RS-232
2
, RS-422
3
, RS-485
4
,
SDM
5
, SDI-12
6
, I2C
7
, and SPI
8
function. Terminals are
configurable in pairs for 5 V or 3.3 V logic for some functions.
NOTE:
Conflicts can occur when a control port pair is used for
different instructions (TimerInput(), PulseCount(),
SDI12Recorder(), WaitDigTrig()). For example, if
C1 is used for SDI12Recorder(), C2 cannot be used for
TimerInput(), PulseCount(), or WaitDigTrig().
Terminals:C1-C8
Maximum Input Voltage: ±20 V
Logic Levels and Drive Current:
Terminal Pair Configuration 5 V Source 3.3 V Source
Logic low ≤ 1.5 V ≤ 0.8 V
Logic high ≥ 3.5 V ≥ 2.5 V
Edge timing
Terminals:C1-C8
1
UniversalAsynchronous Receiver/Transmitter for asynchronous serial
communications.
2
Recommended Standard 232. A loose standard defining how two computing
devices can communicate with each other. The implementation of RS-232 in
CampbellScientific data loggers to computer communications is quite rigid, but
transparent to most users. Features in the data logger that implement RS-232
communication with smart sensors are flexible.
3
Communications protocol similar to RS-485. MostRS-422 sensors will work with
RS-485 protocol.
4
Recommended Standard 485. A standard defining how two computing devices
can communicate with each other.
5
Synchronous Device for Measurement. A processor-based peripheral device or
sensor that communicates with the data logger via hardwire over a short distance
using a protocol proprietary to CampbellScientific.
6
Serial Data Interface at 1200 baud. Communication protocol for transferring data
between the data logger and SDI-12 compatible smart sensors.
7
Inter-Integrated Circuit is a multi-master, multi-slave, packet switched, single-
ended, serial computer bus.
8
Serial PeripheralInterface - a clocked synchronous interface, used for short
distance communications, generally between embedded devices.
CR1000X Specifications | January 27, 2021 4
Maximum Input Frequency: ≤ 1 kHz
Resolution: 500 ns
Edge counting
Terminals:C1-C8
Maximum Input Frequency: ≤ 2.3 kHz
Quadrature input
Terminals: C1-C8 can be configured as digital pairs to monitor
the two sensing channels of an encoder.
Maximum Frequency: 2.5 kHz
Resolution: 31.25 µs or 32 kHz
Pulse-width modulation
Maximum Period: 36.4 seconds
Resolution:
l 0 – 5 ms: 83.33 ns
l 5 – 325 ms: 5.33 µs
l > 325 ms: 31.25 µs
Communications specifications
Ethernet Port: RJ45 jack, 10/100Base Mbps, full and half duplex,
Auto-MDIX, magnetic isolation, and TVS surge protection.
Internet Protocols: Ethernet, PPP, RNDIS, ICMP/Ping, Auto-IP
(APIPA), IPv4, IPv6, UDP, TCP, TLS (v1.2), DNS, DHCP, SLAAC,
Telnet, HTTP(S), SFTP, FTP(S), POP3/TLS, NTP, SMTP/TLS,
SNMPv3, CSI/OIP
Additional Protocols: CPI, PakBus, PakBus Encryption, SDM,
SDI-12, Modbus RTU / ASCII / TCP, DNP3, custom user
definable over serial, UDP, NTCIP, NMEA 0183, I2C, SPI
USB Device: Micro-B device for computer connectivity
CS I/O: 9-pin D-sub connector to interface with Campbell
Scientific CS I/O peripherals.
SDI-12 (C1, C3, C5, C7): Four independent SDI-12 compliant
terminals are individually configured and meet SDI-12
Standard v 1.4.
RS-485 (C5 to C8): One full duplex or two half duplex
RS-422 (C5 to C8): One full duplex or two half duplex
RS-232/CPI: Single RJ45 module port that can operate in one
of two modes: CPI or RS-232. CPI interfaces with Campbell
Scientific CDM measurement peripherals and sensors. RS-232
connects, with an adapter cable, to computer, sensor, or
communications devices serially.
CPI:One CPI bus. Up to 1 Mbps data rate. Synchronization of
devices to 5 μS. Total cable length up to 610 m (2000 ft). Up to
20 devices. CPI is a proprietary interface for communications
between Campbell Scientific data loggers and Campbell
Scientific CDM peripheral devices. It consists of a physical layer
definition and a data protocol.
Hardwired:Multi-drop, short haul, RS-232, fiber optic
Satellite: GOES, Argos, Inmarsat Hughes, Irridium
Standards compliance specifications
View EU Declarations of Conformity at
www.campbellsci.eu/cr1000x.
Shock and Vibration:MIL-STD 810G methods 516.6 and 514.6
Protection:
l Wiring panel:IP40
l Measurement module when connected to the wiring
panel: IP65
EMIand ESD protection:
l Immunity: Meets or exceeds following standards:
o
ESD: per IEC 61000-4-2; ±15 kV air, ±8 kV contact
discharge
o
Radiated RF: per IEC 61000-4-3; 10 V/m, 80-1000
MHz
o
EFT: per IEC 61000-4-4; 4 kV power, 4 kV I/O
o
Surge: per IEC 61000-4-5; 4 kV power, 4kV I/O
o
Conducted RF: per IEC 61000-4-6; 10 V power, 10
V I/O
l Emissions and immunity performance criteria available
on request.
Warranty
Standard:Three years against defects in materials and
workmanship.
Extended (optional):An additional four years. against defects
in materials and workmanship, bringing the total to 7 years.
CR1000X Specifications | January 27, 2021 5
Terminal functions
Analogue input terminal functions
SE
DIFF
12
┌1┐
HL
34
┌2┐
HL
56
┌3┐
HL
78
┌4┐
HL
910
┌5┐
HL
1112
┌6┐
HL
1314
┌7┐
HL
1516
┌8┐
HL
RG1 RG2
Single-Ended Voltage ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Differential Voltage H L H L H L H L H L H L H L H L
Ratiometric/Bridge ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Thermocouple ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Current Loop ✓ ✓
Period Average ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Pulse counting terminal functions
P1 P2 C1-C8
Switch-Closure ✓ ✓ ✓
High Frequency ✓ ✓ ✓
Low-level Ac ✓ ✓
Analogue output terminal functions
VX1-VX4
Switched Voltage Excitation ✓
Voltage Output
C1-C8
1
VX1-VX4 5V 12V SW12-1 SW12-2
5 VDC ✓ ✓ ✓
3.3 VDC ✓ ✓
12 VDC ✓ ✓ ✓
1
C terminals have limited drive capacity. Voltage levels are configured in pairs.
Communications terminal functions
C1 C2 C3 C4 C5 C6 C7 C8 RS-232/CPI
SDI-12 ✓ ✓ ✓ ✓
GPS PPS Rx Tx Rx Tx Rx Tx Rx
TTL 0-5 V Tx Rx Tx Rx Tx Rx Tx Rx
LVTTL 0-3.3 V Tx Rx Tx Rx Tx Rx Tx Rx
RS-232 Tx Rx Tx Rx ✓
RS-485 (Half Duplex) A- B+ A- B+
CR1000X Specifications | January 27, 2021 6
Communications terminal functions
C1 C2 C3 C4 C5 C6 C7 C8 RS-232/CPI
RS-485 (Full Duplex) Tx- Tx+ Rx- Rx+
I2C SDA SCL SDA SCL SDA SCL SDA SCL
SPI MOSI SCLK MISO MOSI SCLK MISO
SDM
1
Data Clk Enabl Data Clk Enabl
CPI/CDM ✓
1
SDM can be on either C1-C3 or C5-C7, but not both at the same time.
Communications functions also include Ethernet and USB.
Digital I/O terminal functions
C1-C8
General I/O ✓
Pulse-Width Modulation Output ✓
Timer Input ✓
Interrupt ✓
Quadrature ✓
CR1000X Specifications | January 27, 2021 7
