Product Name: GPS MoudleModel Number: HVS-GPS04Place of Origin: ChinaTechnical specifications: 1) Electrical characteristics: a) Frequency: L1, 1575.42MHz b) C / A code: 1.023MHz chip rate c) Channels: 16 2) Sensitivity: a) Tracking: -152dBm typ b) Acquisition: -139dBm typ 3) Accuracy: a) Position: 7 meters CEP (90%) horizontal, SA off b) Velocity: 0.1 meters / second c) Time: 1 microsecond synchronized to GPS time 4) Datum: a) Default: WGS-84 b) Other: support different datum by request 5) Acquisition rate (open sky, stationary requirements): a) Hot start: 12sec, average b) Warm start: 38sec, average c) Cold start: 60sec, average 6) Dynamic conditions: a) Altitude: 10,000 meters max. b) Horizontal Velocity: 300 kilometers / hour max. c) Vertical Velocity: 36 kilometers / hour max. d) Acceleration: 2g, max. e) Jerk: 4 meters / second3, max. 7) Power: a) Main power input: 3.3 ±5% V DC input. b) Supply current: hv4125 27mA at 3.3V (continuous mode) c) Z x 4125P 33mA at 3.3V (continuous mode) including LNA 8) Serial port: a) Electrical interface: one full duplex serial communication, TTL interface b) Protocol message: NMEA-0183, version 3.0 optional c) Default NMEA GGA, GSA, GSV, RMC and VTC d) 9600 baud rate, 8 bits data, 1 start, 1 stop, no parity (GSA, & GSV is 3 sec output 1 msg, option baud rate: 4800, 19200, 38400) 9) Time-1PPS pulse (optional): a) Level: TTL b) Pulse duration: 100ms c) Time reference: at the pulse positive edge d) Measurements: aligned to GPS second, +-1 microsecond e) Recommended external antenna specification f) Gain: 20dB (including cable loss) g) Noise figure: 1.5dB i) Operate Voltage: 2.5 ~ 2.8V 10) Environmental characteristics: a) Operating temperature range: -40 deg. C to +80 deg. C b) Storage temperature range: -55 deg. C to +100 deg. C 11) Physical dimensions: a) HV4125, 1.043\'\' x 1.043\'\' x 0.11\'\' (26.5 x 26.5 x 3.0mm) b) HV4125P 1.043\'\' x 1.043\'\' x 0.27\'\' (26.5 x 26.5 x 7.0mm) c) Weight: hv4125: 3.4g d) Antenna connector: 1.27mm pitch 3 pin board to board e) Interface connector: 1.27mm pitch 10 pin / 6 pin board to board 12) Remarks: difference between HV4125 and HV4125P a) HV4125: one RF input with antenna detector (use active antenna only) b) HV4125P: two RF input with auto switch (one patch antenna, one external antenna)