Specifications

Dual Frequency GNSS Receiver
Technical Specifications
14
MSI Surveying Systems Printed: November 7, 2014
GNSS Sensor
X91+
Receiver Type
GNSS 220 Channels
Channels
12 x L1CA GPS, 12 x L1P GPS , 12 x L2P GPS, 12 x L2C GPS
12 x L1 GLONASS, 12 x L2 GLONASS
3 x SBAS or 3 additional L1CA GPS, 1 x L-Band
Update Rate
10 Hz standard (20Hz available)
Timing (1PPS) Accuracy
20 ns
Cold Start Time
< 60s typical (no almanac or RTC)
Warm Start Time
< 30s typical (no almanac or RTC)
Hot Start Time
< 10s typical (almanac, RTC and position)
Maximum Speed
1,850 kph (999 kts)
Differential Options
SBAS, Autonomous, External RTCM, RTK,
Horizontal Accuracy
RTK
STATIC
OmniSTAR HP
SBAS (WAAS)
Autonomous
RMS (67%) 2DRMS (96%)
H: 10mm + 1ppm 20mm + 2ppm
V: 15mm + 1ppm 30mm + 2ppm
H: 3mm + 0.5ppm
V: 4mm + 1ppm
< 0.1 m < 0.2m
< 0.3 m < 0.6m
< 1.2 m < 2.5m
Communications
Serial Ports
3 full duplex RS232
Baud Rates
4,800 - 115200
Correction I/O Protocol
Hemisphere GPS proprietary, RTCM v2.3, (DGPS), RTK v3, CMR, CMR+
Data I/O Protocol
NMEA 0183, Hemisphere GPS binary
Timing Output
1 PPS (HCMOS, active high, rising edge sync, 10kΩ, 10 pF load
Event Marker Input
HCMOS, active low, falling edge sync, 10kΩ
USB
1 USB Host, 1 USB Device
Power
Input Voltage
8 to 36 VDC
Power Consumption
< 4.3 W nominal (using L-Band); < 3.5 W nominal (no L-Band)
Current Consumption
355 mA nominal (@ 12 VDC using L-Band); 295 mA nominal (@ 12VDC no L-Band)
Environmental/Mechanical
Environmental Specification
Operating temp: -40°F to 158°F (-40°C to 70°C)
Storage temp: -40°F to 185°F (-40°C to 85°C)
Humidity: 95% (non-condensing)
Dimensions & Weight
7.01” x 4.72” x 1.81”
(178 x 120 x 46 mm)
1.4 lbs. (0..64 kg)
EMC Regulations
CE (IEC 60945 Emissions and Immunity), FCC Part 15 Subpart B
Rugged Features
Water & dust resistance: IP67
Drop spec: 1.2 m (4 ft.) drop on all faces, edges and corners per MIL-STD-810G
Electrostatic discharge: +/- 15kVdc air discharge, +/- 8kVdc contact discharge
Tumble spec: 1,000 1.6 ft./0.5m tumbles (2,000 drops)
Specification subject to change without notice. Battery performance will vary based on software applications