Campbell CR300 series - Pulse-Width Modulation - Specifications; Communication - Specifications; System - Specifications

CR300-Series Datalogger
48
7.9 Pulse-Width Modulation – Specifications
Terminals: SE terminals 1-4
Period
Maximum: 2047 ms
Resolution
0 – 5 ms: 83.33 ns or 12 MHz
5 – 325 ms: 5.00 µs or 200 kHz
> 325 ms: 31.25 µs or 32 kHz
7.10 Communication – Specifications
Internet Protocols: PPP, ICMP/Ping, Auto-IP (APIPA), IPv4,
IPv6, UDP, TCP, TLS, DHCP Client, SLAAC,
DNS Client, Telnet
Additional
Protocols Supported: PakBus, SDI-12, Modbus RTU, Modbus
ASCII, Modbus TCP/IP, DNP3, custom user-
definable over serial.
Data File Formats: CSV, XML, JSON, binary, encrypted
USB: USB micro-B device only, 2.0 full-speed 12
Mbps, for computer connection.
RS-232: Female RS-232, 9-pin interface
1200 to 115.2 kbps
Serial: One TX/RX pair (terminals C1/C2)
0 to 5 V output, 3.3 V input
1200 to 115.2 kbps
SDI-12: Two independent SDI-12 V1.3 compliant
terminals (C1, C2) configurable as sensor or
recorder
7.11 System – Specifications
Operating Temperature: –40 to 70 °C
Processor: ARM Cortex M4 running at 144 MHz
Memory
CPU Drive / Programs: 5 MB flash
Data: 10 MB flash
Operating System (OS): 2 MB flash
Clock Accuracy: ±1 minute per month
Clock Resolution: 1 ms
Program Execution Interval: 100 ms to 1 day