Lassen SQ technical data

Performance Specifications

General:

L1 (1575.42 MHz) frequency, C/A code, 8-channel, continuous tracking receiver, 32 correlators

Update rate:

TSIP @ 1 Hz; NMEA @ 1 HZ

Accuracy:

Horizontal: <6 meters (50%), <9 meters (90%)
Altitude: <11 meters (50%), <18 meters (90%)
Velocity: 0.06 m/sec
PPS: ±95 nanoseconds

Acquisition:

Reacquisition:<2 sec. (90%)
Hot Start: <14 sec (50%), <18 sec (90%)
Warm Start: <38 sec (50%), <45 sec (90%)
Cold Start: <90 sec (50%), <170 sec (90%)

Cold start requires no initialisation. Warm start implies last position, time and almanac are saved by backup power. Hot start implies ephemeris also saved.

Dynamics:

Acceleration: 4g (39.2 m/sec2)
Motional jerk: 20 m/sec3

Operational limits:

Altitude <18000m or velocity <515m/s (COCOM limit).
Either limit may be exceeded but not both.

Environmental Specifications

Operating Temperature:

–40°C to +85°C

Storage Temperature:

–55°C to +105°C

Vibration

0.008 g2/Hz 5 Hz to 20 Hz
0.05 g2/Hz 20 Hz to 100 Hz
–3 dB/octave 100 Hz to 900 Hz

Operating Humidity

5% to 95% R.H. non-condensing @ +60°C

Technical Specifications

Prime power

+3.0 VDC to +3.6 VDC (3.3 V typ.)

Power consumption

GPS board only: 100 mW @ 3.3 V ,
With embedded ant.: 133.3 mW @ 3.3 V

Back-up power

+2.5.VDC to +3.6VDC

Ripple Noise

Max 60 mV, peak-to-peak from 1 Hz to 1 MHz

Antenna Fault Protection

Short-circuit detection and protection

Interface Characteristics

Connectors:

I/O: 8-pin (2x4) male header, micro terminal strip ASP 69533-01
RF: Low-profile coaxial connector H.FL-R-SMT (10), 50 Ohm

Serial ports:

1 serial port (transmit/receive)

PPS:

3.3 V CMOS-compatible, TTL-level pulse once per second with the rising edge of the pulse synchronised with UTC

Protocols:

TSIP @ 9600 baud, 8 Bits  and NMEA 0183 v3.0, selectable baud rate, 8 Bits

NMEA Messages:

GGA, VTG, GLL, ZDA, GSA, GSV and RMC. Messages selectable by TSIP command; selection stored in flash memory

Physical Characteristics

Enclosure:

Metal enclosure with solder mounting tabs

Dimensions:

26 mm W x 26 mm L x 6 mm H (1.02" x 1.02" x 0.24")

Weight:

Approximately 5.7 grams (0.2 ounce) including the shield

 
German version
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3g_modem