Trimble DSM132 DGPS Receiver
Combined MSK,
WAAS/EGNOS, and
satellite L-band
DGPS receiver for
ports, harbors, and
inland waterways
The Trimble® DSM™132 DGPS receiver is an
ideal solution for surveying and dredging in ports,
harbors and inland waterways.
The DSM132 is a high-performance submeter
GPS receiver that houses an MSK beacon and
satellite differential correction receiver. It uses free
public differential corrections from sources such
as MSK beacons or WAAS/EGNOS. Alternatively
the DSM132 can use subscription-based private
differential correction services. Using these
corrections, the DSM132 calculates submeter
positions in real time.
Wide area coverage
The MSK beacon receiver provides superior weaksignal performance, allowing differential corrections
to be received at long distances from the reference
station and during challenging weather conditions.
The dual-channel capability allows for intelligent
and seamless switching between beacons.
The L-band satellite differential correction receiver
requires a subscription to a differential correction
service and provides multiple vendor support.
The receiver ensures the satellite corrections to
be uniformly accurate over the entire satellite
coverage area without the degradation in accuracy
associated with increasing distance from fixed
reference stations.
The DSM132 accepts RTCM SC-104 differential
corrections from an external source through a serial
interface.
The Trimble EVEREST™ technology improves results
in high multipath environments and locations
where other radio frequencies could jam the GPS
signals such as harbors and construction sites.
Features and Benefits
Superior Integration
The DSM132 receiver is designed for easy
setup and installation with a built-in display
and keyboard. The source and status of DGPS
corrections can easily be determined from the
built-in differential correction receivers, or from an
external differential correction source.
The DSM132 is easy to connect with other
onboard equipment such as integrated navigation
systems, radars, autopilots, and plotters. Through
one of the two serial ports, these receivers output
standard NMEA-0183 messages, including
position, velocity, and status information. The
DSM132 receiver outputs position reports at up to
10 Hz. The second serial port is for setup, control,
and data output using Trimble Standard Interface
Protocol (TSIP). For easy setup, the Windows based
Trimble TSIP Talker™ software is included with
the DSM132. The receivers also feature a 1 PPS
output available on either serial port and offer a
differential speed accuracy of better than 0.1 Knot.
Reference Station
The DSM132RS is a cost effective solution for
providing high quality DGPS corrections. The
corrections are generated in the standard RTCM
• Easy to set up and install
• Beacon, L-band, WAAS/
EGNOS or external corrections
• Built-in display and keyboard
• High position output rate with
low latency
• Optional reference station
output
SC-104 format for broadcast
in situations where there is no
MSK beacon signals, or L-band
corrections are not suitable.
The DSM132 receiver is a highquality solution for applications
that require submeter positioning
in demanding environments.
Trimble DSM132 DGPS Receiver
Combined MSK, WAAS/EGNOS, and satellite L-band DGPS receiver for ports, harbors,
and inland waterways
Standard Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
12-channel GPS receiver
L-Band satellite differential correction receiver1
Dual-channel digital medium frequency beacon reciever
WAAS (U.S.A.) and EGNOS (Europe) capable2
Sub-meter differential accuracy
EVEREST Multipath Rejection (standard in receivers with version 1.73 firmware
or greater)
2 line, 16 character liquid crystal display
4 button keyboard
Combined L1 GPS, Satellite differential, and beacon antenna
Two programmable RS-232 serial ports:
• NMEA-0183 output/RTCM SC-104 input
• TSIP I/O
1, 2, 5, and 10 Hz output messages
Operation manual and utilities on CD
15 m antenna cable
GPS reciever to PC cable
Magnetic mount for antenna
1 PPS output
Physical Characteristics
DSM132
Size . . . . . . . . . . . . . . . . . . . . . . . 14.5 cm wide × 5.1 cm high × 19.5 cm deep
(5.7 in × 2.0 in × 7.7 in)
Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.76 kg (1.68 lb)
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 W (max.), 10 to 32 VDC
Operating temperature . . . . . . . . . . . . . . . .–20 °C to +65 °C (–4 °F to +149 °F)
Storage temperature . . . . . . . . . . . . . . . .–30 °C to +85 °C (–22 °F to +185 °F)
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100% condensing, unit fully sealed
Combined Antenna
Size . . . . . . . . . . . . . . . . . . . . . . . 15.5 cm deep × 14 cm high (6.1 in × 5.5 in)
Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.55 kg (1.2 lb)
Operating temperature . . . . . . . . . . . . . . .–30 °C to +65 °C (–22 °F to +149 °F)
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100% condensing, unit fully sealed
Casing . . . . . . . . . . . . . . . . . . . . . . . . . . . Dust proof, waterproof, shock resistant
Options
•
•
•
Reference station (RTCM output)
DSM132RS–DSM132RS receiver with 30 m antenna cable, L1 Geodetic antenna
Trimble offers a range of radio options for users who do not wish to use MSK
beacon or L band corrections
Performance Characteristics
GPS Receiver
General . . . . . . . . . . . . . . . . . . . . 12-channel, parallel tracking, L1 C/A code with
carrier phase filtered measurements and multi-bit digitizer
Update rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1, 2, 5 and 10 Hz
Differential speed . . . . . . . . 0.1 kn (0.1 MPH, 0.16 km/h, 5.6 cm/sec) accuracy
Differential position . . . . . . . . . . . . . . . . . Less than 1 m horizontal RMS accuracy
(At least 5 satellites, PDOP <4 and RTCM SC-104 standard format broadcast
from a Trimble reference station or equivalent reference station.)
Time to first fix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .<30 sec, typical
NMEA messages . . . . . . GGA, GLL, GRS, GSA, GST, GSV, MSS, RMC, VTG, XTE, ZDA
and Trimble proprietary messages
MSK Beacon Dual-Channel Receiver
Frequency range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283.5 KHz to 325.0 KHz
Channel spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 Hz
MSK modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50, 100 and 200 bits/sec
Signal strength . . . . . . . . . . . . . . . . . . . . . . . 10 µV/meter minimum @ 100 BPS
Dynamic range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 dB
Beacon acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <5 sec, typical time
Operating modes . . . . . . . . . . . . . .Auto Power, Auto Distance, and Manual modes
L-band Satellite Differential Correction Receiver with Multiple Vendor Support
Bit error band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10–5 for Eb/N of >5.5 dB
Acquisition and re-acquistion time . . . . . . . . . . . . . . . . . . . . . . . . .<2 sec, typical
Frequency band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1525–1560 MHz
Channel spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 kHz
Ordering Information
For further information please contact your local Trimble office or representative.
You may also visit our website at http://www.trimble.com.
1 For the DSM132 to operate with the L-band corrections the client must subscribe to a satellite
differential service. Contact L band suppliers such as Omnistar or Thales to check L band
availability in your area.
2 Contact your local Trimble office or representative to check for ‘free to air’ Satellite Based
Augmentation Service (SBAS) availability in your area.
NORTH AMERICA
Trimble Geomatics and Engineering Division
5475 Kellenburger Road • Dayton, Ohio 45424-1099 • USA
800-538-7800 (Toll Free)
+1-937-245-5154 Phone • +1-937-233-9441 Fax
E U RO P E
Trimble GmbH
Am Prime Parc 11 • 65479 Raunheim • GERMANY
+49-6142-2100-0 Phone • +49-6142-2100-550 Fax
A S I A - PAC I F I C
Trimble Navigation Singapore Pty Limited
80 Marine Parade Road • #22-06, Parkway Parade
Singapore 449269 • SINGAPORE
+65-6348-2212 Phone • +65-6348-2232 Fax
YOUR LOCAL TRIMBLE OFFICE OR REPRESENTATIVE
www.trimble.com
© 1999–2004, Trimble Navigation Limited. All rights reserved. Trimble and the Globe & Triangle logo are trademarks of Trimble Navigation
Limited registered in the United States Patent and Trademark Office and other countries. DSM, EVEREST, and TSIP Talker are trademarks
of Trimble Navigation Limited. All other trademarks are the property of their respective owners. Reorder PN 022482-129B (01/04)