Product Card

ISAAC InMetrics – WRU201
Recorder and Wireless Router
WRU201-EN-Rev3
2 / 7
Operation Details
Circuit Protection
The recorder features built-in fuses that provide circuit
protection to the entire system and peripherals. The recorder
also includes protection against reverse polarity and supply
over-voltage. In the event of reverse polarity (≤ 70 V) or
voltage outside operating range (32 – 70 V), the recorder
automatically shuts down to avoid damage, and resumes
operation when voltage returns to operating range.
EMI/RFI and Electrostatic Discharge Protection
All power and signal wires connected to the system are
shielded and filtered against electromagnetic/radio
frequency interference to offer excellent data collection in
highly radiated environments. ISAAC Instruments recorders
and peripherals undergo rigorous EMI/RFI testing to ensure
system reliability in the harshest environments.
Vehicle Data Ports (CAN)
The CAN 2.0 A/2.0B ports are capable of recording
information from:
- Diagnostic on CAN (ISO 15765)
- OBD on CAN SAE J1979
- SAE J1939
- CAN Bus compatible electronic devices
- Single frame broadcast messages with standard (11
bit) or extended (29 bit) identifiers
The SAE J1708 port is capable of recording information from
SAE J1708/SAE J1587 and SAE J1922 data links.
Note: only 3 diagnostic ports can be activated simultaneously
Internal Accelerometers and Gyroscopes
The 3 accelerometers and gyroscopes measure the
longitudinal, lateral and vertical forces the recorder is
subjected to.
Digital Inputs
The input measures the state of an input.
The recorder can be configured to apply pull-up (default) or
pull-down resistance:
- Use pull-up when signal input switches to 0 V (GND)
- Use pull-down when signal input switches to +V
Shutdown Timer
The recorder features a shutdown timer that can be used to
automatically power off the recorder after a set amount of
time, in order to avoid battery drainage. The shutdown timer
delay is configurable.
Shutdown timer logic:
- When ground or an open signal is detected to the
SHTDWN cable, the countdown to power shutdown
begins.
(Shutdown power consumption is less than 1 µA.)
- When a high signal level (3 to 35 Vdc) is detected on the
SHTDWN cable, the timer is reset, and the recorder is
powered on.
Wake-up Feature
The recorder includes a wake-up timer feature that can be
used to communicate with the system server at regular
intervals.
Designed to work in conjunction with the shutdown timer, the
wake-up feature lets system users know that the recorder is
still functional, although it has been shut down.
The wake-up time interval and duration are configurable.
Automatic Over-the-air (OTA) software updates
Configuration and firmware updates are completed over-the-
air (OTA).