USGlobalsat ER-112 User Manual
Page 3

ET-112
Specifications are subject to be changed without notice.
Page 3 of 15
Version 1.3
Channels 20
Sensitivity -155dBw
Cold Start
48 seconds average
Warm Start
38 seconds average
Hot Start
8 second average
Reacquisition
0.1 second average
Accuracy
Position: 15 meters, 2D RMS 10 meters,
2D RMS, WAAS enable 1~5 meters DGPS
corrected
Velocity: 0.1 ms (95% SA Off)
Time: 1
µs synchronized to GPS time
Maximum Altitude
18,000 meters (60,000 feet) max
Maximum Velocity
515 meter/second (1000 knots) max
Maximum Acceleration
4G
Datum WGS-84
Jerk Limit
Jerk: 20m/sec **3
Electrical Level
ET-112: TTL output voltage: 0~3.5V
ER-112: RS232 Level
Communication Full-Duplex
asynchronous
Code Type
ASCII
Protocol
NMEA 0183 (default) / SiRF Binary
(available)
GPS Message Output
NMEA 0183 >> GGA, GSA, GSV, RMC,
(VTG & GLL optional)
DGPS Protocol
RTCM SC-104, v2.00, type 1, 2 and 9
Time Mark (1 PPS)
Level: TTL
Pulse Duration: 100ms
Time Reference: At the pulse positive edge
Measurement: Aligned to GPS sec, +/- 1us
Interface
External Antenna Port
MMCX
Physical Characteristic
Dimensions
2.8” x 1.6” x 0.4” (71 x 40.5 x10mm)
DC Characteristics
Power Supply
3.8V~6.5V DC