Naelcom Lassen iQ/SQ Clone


Manufacturer: Naelcom
Naelcom Lassen iQ/SQ Clone

NLC-iQ is a GPS receiver based upon the popular Trimble Copernicus II surface-mount receiver. It has been designed to be a fit/form replacement for the end of life Trimble Lassen iQ and Lassen SQ modules.


Mechanical - The NLC-iQ has the same mechanical dimensions as the Lassen iQ and SQ. It has the same 8 pin data connector as the Lassen iQ/SQ and has the same antenna connector (both located in the exact same locations as found on the iQ and SQ). The only thing that it doesn't have is the metal shield. As you can see in the picture above, the board has four pins which are a substitute for the solder tabs which the metal shield has. The Copernicus II does not require a metal shield.

GPS Protocol - The Lassen iQ supported Trimble's TSIP (Trimble's own binary based protocol), NMEA (industry-standard ASCII protocol) and TAIP (Trimble's own ACSII protocol). The Copernicus II supports all of these protocols.

Serial Interface - the Copernicus II has one limitation which is that the serial port parity is not configurable (only 'NO' parity is supported). Trimble's Lassen iQ and SQ supported ODD, EVEN and NO parity with a default of ODD parity. This default setting might affect compatibility for some customers.

Performance: The Copernicus II is a far superior product to the SQ and iQ. It supports more concurrent satellite tracking, faster startup and is much more sensitive.


This module can replace all released Lassen iQ / Lassen SQ modules including:

  • Trimble 46240-00 Lassen SQ (Non-RoHS)*
  • Trimble 46240-05 Lassen SQ (RoHS)*
  • Trimble 46240-10 Lassen iQ (Non-RoHS)
  • Trimble 46240-20 Lassen iQ (Non-RoHS)
  • Trimble 46240-25 Lassen iQ (RoHS)

* Lassen SQ compatibility depends on how the unused pins are connected.


GeneralL1 (1575.42 MHz) frequency, C/A code
12-channel, continuous tracking receiver
Update rateTSIP @ 1 Hz; NMEA @ 1 Hz; TAIP @ 1 Hz
AccuracyHorizontal: <2.5 meters (50%), <5 meters (90%)
Horizontal (with SBAS accuracy): <2 meters (50%), <4 meters (90%)
Altitude: <5 meters (50%), <8 meters (90%)
Altitude (with SBAS accuracy): <3 meters (50%), <5 meters (90%)
Velocity: 0.06 m/sec
Static PPS: ±60 nanoseconds
PPS (Stationary Mode "indoor" @ –145dBm): ±350 nanoseconds
AcquisitionReacquisition: 2 sec
Hot Start (with battery): 3 sec
Hot Start (no battery): 8 sec (ephemeris not older than 4 hours)
Warm Start: 35 sec
Cold Start: 38 sec
Out of the Box: 41 sec
Operational LimitsVelocity: 515 m/s
Receiver Dynamics: 2G
SensitivityTracking Sensitivity: -160dBm
Acquisition Sensitivity: -148dBm*
* For hot start with ephemeris, otherwise -146dBm
PPS3.3 V CMOS-compatible pulse, once per second
ProtocolsTSIP, default: 38400, 8, None, 1 (parity not configurable)
NMEA, default: 4800, 8, None, 1 (parity not configurable)
TAIP, default: 4800, 8, None, 1 (parity not configurable)
Note: These are the defaults of the Copernicus II - all but parity can be changed via a Trimble software tool (either individually or in batch mode)
Serial PortsTwo 3.3 V CMOS, TTL compatible serial ports


ElectricalPrime Power: 5VDC, ±5%
Power consumption (board only): 65mA
Back-up power: +2.7 to +5V DC
Back-up consumption: 7 microAmps @ +3.0V
• RF: H.FL
• I/O: 8-pin (2x4), 1.27 mm header

Dimensions: 26 mm x 26 mm x 9 mm
TemperatureTemperature range (operation): -40 to +85°C
Temperature range (storage): -55 to +100°C
Humidity5% to 95% RH non-condensing @ 60°C
Warranty1 Year



BoardNLC-iQ-CP2-3P260 Lassen iQ/SQ clone based upon Copernicus II module
Accessories57861-20 Bullet III 3.3V GPS antenna TNC connector, 30dB gain
66800-50 3.0V, 27dB GPS antenna, mag mount, 5 meter cable, MCX connector
66800-52 3.0V, 27dB GPS antenna, mag mount, 5 meter cable, SMA connector
66801-00 3.0V, 27dB GPS antenna, 80mm cable, HFL connector, unpackaged
70228-00 3.0V Hardmount GPS Antenna with TNC connector, 28 dB gain
58542 Lassen iQ/Condor C2626 Antenna Transition Cable, MCX to HFL, length 10cm
58541-05 Lassen iQ/Condor C2626 Antenna Transition Cable, SMA to HFL, length 12.9cm
Recab UK
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