containing a back-up battery into the trash. Consult your local waste management facility for proper disposal instructions.
3.1.3 Physical and Environmental Specifications
The HMU-3640
™
is designed to operate in environments typically encountered by heavy duty fleet vehicles, including wide
temperature
extremes, voltage transients, and potential interference from other vehicle equipment.
To ensure proper operation in such an environment, HMU-3640
™
s were subjected to standard tests defined by the Society of
Automotive
Engineers (SAE). The specific tests included temperature, shock, vibration, and EMI/EMC. These tests were performed by
independent labs and
documented in a detailed test report.
The following shows the environmental conditions the HMU-3640
™
is designed to operate in and the relevant SAE tests that
were performed. No
formal altitude tests were conducted.
Dimensions
7.0
”
(L) x 3.0
”
(W) x 1.6
”
(H)
178mm (L) x 76mm (W) x 41mm (H)
Weight
8.8oz (250g)
Ingress Protection Rating
- IP66, IP67
Temperature
Operating Temperature Range: -30
o
C to 75
o
C
Storage Temperature Range: -40
o
C to 85
o
C
Battery Charging Range: 0
o
C to 40
o
C
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Humidity
95% relative humidity, 50
°
non-condensing
Altitude
Operates at altitudes of up to 10,000 feet and can be stored safely up to 40,000 feet
Shock and Vibration
Ground vehicle environment with associated shock and vibration
SAE Test: SAE J1455
Mil Standard 202G, 810F
Bench-Handling (Non-Operating)
4 inch pivot drops on each of the faces on which it may be placed for servicing or installation.
Electromagnetic Compatibility (EMC)
EMC compliant for a ground vehicle environment
Operating Voltage Range
12/24 VDC Vehicle Systems
9-32 VDC (start-up, operating)
7-32 VDC (momentary)
Power Consumption
Typical 500uA @ 12V (deep sleep)
Typical 20mA @ 12V (radio-active sleep)
Typical 100mA @ 12V (GPS tracking and cell idle)
Battery Pack
Battery Capacity
: 500 mAh
Battery Technology
: Nickel-Metal Hydride, NiMH
Charging Temperature
: 0
°
to +40
°
C
Transient Protection
Input voltage transients typical of large trucks
Electrostatic Discharge (ESD)
No damage or performance degradation after the ESD disturbance.
Power Consumption
<350 uA @ 12V (deep sleep)
20 mA @ 12V (idle on network)
150 mA @ 12V (active tracking with VBUS active)
GNSS
55 channel GPS receiver (with SBAS; WAAS, EGNOS, MSAS)
GPS, GLONASS Capable (only two GNSS systems can run concurrently)
Tracking Sensitivity: -167dBm
Acquisition Sensitivity:
