Quick Start Guide

Overview

This guide provides essential information for setting up and operating the Trimble R750 GNSS Receiver.

The front panel features a display screen, USB-C port, power button, power LED indicator, escape button, navigation keys (up, down, left, right arrows), and an enter button. The rear panel includes connectors for the GNSS antenna, external power, Ethernet, serial ports (COM2, COM3/CAN, 1PPS), and the UHF radio antenna (COM1, Event In, 1PPS).

CAUTION: Before operating this product, please read the safety warnings and information. Go to https://receiverhelp.trimble.com/r750-gnss/safety-info_r750.html.

Accessories and Upgrades

For a full list of accessories, please contact your Trimble dealer or go to https://receiverhelp.trimble.com/r750-gnss/accessories_r750.html.

AC Power Kits

• International (P/N GNSS-AC-INT)
• China (P/N GNSS-AC-CHN)
• Japan (P/N GNSS-AC-JPN)
• USB-C Wall charger with cable (P/N GNSS-AC-USB)

Cables

Recommended cable combinations for LEMO and DB26 connectors on the receiver using a DC power source:

• LEMO for external lead acid battery: P/N 46125-20: Cable - Power, 3 m (10 ft), LEMO OS7P(M) to battery clips
• LEMO combination 3.3 m, external lead acid battery, COM1: P/N 59044-10: Cable - Data/Power, 1.5 m, DB9(F) to LEMO OS7P(M) / SAE; P/N 83223-02-HH: Cable - Power, 1.8 m, SAE to battery clips
• DB26 combination 2.3 m, external lead acid battery, COM 1/2/3/4, ETH, 1PPS: P/N 78235-10: Cable - Data/Power, 0.5 m, DB26(F) to DB9(F)/DB9(M)/RJ45(F)/BNC/SAE; P/N 83223-02-HH: Cable - Power, 1.8 m, SAE to battery clips
• 2.7 m DC extension cable for cable options #2 and #3: P/N 51862-00-HH: Cable - SAE to SAE, power cable, 2.7 m (9 ft)
• USB-C: Cable for external 15 V USB-PD powerpack or wall charger: P/N 121920-01-HH: Cable - 2 m, USB-C to USB-C power/data, R750

R750 Receiver to an External UHF Radio

• LEMO for external TDL450 radio on COM1: Cable ships with TDL450 kits: P/N 130918: TDL450B radio, LEMO OS7P(M) to LEMO 1S5P(M); P/N 66656-10: TDL450H radio, LEMO OS7P(M) to LEMO 1S5P(M) and SAE power
• LEMO to connect COM1 with third-party radio cables: P/N 59044-10: Data/Power, 1.5 m, DB9(F) to LEMO OS7P(M) to SAE.

Upgrades Available for Purchase

For more information, please contact your Trimble dealer or go to https://receiverhelp.trimble.com/r750-gnss/upgrades_r750.html.

• Precise Rover with Base backup
• RTK Base
• Rover 10/2 Precision upgrade
• Rover 10/10 Precision upgrade
• Programmatic Interface

Getting Started

1. Install the Nano-SIM Card (Optional)

1. Ensure the receiver is turned off.
2. Remove the cover on the bottom of the receiver to access the SIM card slot.
3. Insert the nano-SIM card.
4. Reattach the cover over the SIM card slot.
5. After completing the activation in Step 3, the nano-SIM card can be enabled. Select LTE Modem, enter the APN, and enable.

(Image description: Close-up of the SIM card slot on the receiver with a nano-SIM card inserted.)

2. Charge the Internal Battery

1. Connect the USB-C PD power adapter (P/N 121928-01) and cable (P/N 121920-01) to the USB-C port on the receiver.
2. The receiver display shows the current charge status.
3. It takes up to 5.5 hours to fully charge the battery. When the R750 receiver with the UHF radio is transmitting at 2 W, the battery lasts for about 4 hours at room temperature. Adding a USB-PD powerpack (30,000 mAh) to a fully charged internal battery provides about 13.9 hours of power.

(Image description: Trimble R750 receiver connected to a USB-C PD power adapter and cable.)

TIP: Alternatively, use the Trimble power supply (P/N 107000) with a DB26 adapter (e.g. P/N 57168) or a LEMO cable with DC input (e.g. P/N 59044-10 or 59044) to charge the internal battery.

3. Activate Warranties, Install Options and Radio Settings, and Update the Receiver Firmware

1. Install Trimble Installation Manager. Go to www.trimble.com/installationmanager.
2. Connect the receiver to your computer using a USB-C or serial cable.
3. Start Trimble Installation Manager.
4. Select the Receiver tab and click Connect.
5. Select COMx Trimble USB from the list of available ports and click OK.

For information on updating the receiver firmware, go to https://receiverhelp.trimble.com/r750-gnss/firmware_updating.html.

4. Connect the GNSS Antenna

Connect the GNSS antenna cable (e.g. P/N 58957-02) to the TNC connector on the receiver back panel. Do not overtighten.

(Image description: Close-up of the back panel of the Trimble R750 receiver showing the TNC connector for the GNSS antenna.)

5. Connect the Radio Antenna

Connect the UHF radio antenna (P/N 123588) or external UHF antenna cable to the RP-TNC connector on the receiver back panel. Do not overtighten.

NOTE: If you are using a standard polarity 450 MHz external UHF antenna cable, a reverse polarity TNC adapter (P/N 119128) is required. Do not use an adapter with a standard polarity whip antenna (e.g. P/N 44085-60) as this could negatively affect the performance of the radio.

(Image description: Close-up of the back panel of the Trimble R750 receiver showing the RP-TNC connector for the radio antenna.)

6. Connect the Ethernet Cable

1. Connect a Trimble DB26 adapter with an RJ45 socket (e.g. P/N 57168), to the DB26 connector on the receiver rear panel.
2. Connect an RJ45 cable to the socket on the DB26 adapter.
3. Use the navigation keys to find the IP address on the front screen.

(Image description: Trimble R750 receiver connected via a DB26 adapter to an RJ45 Ethernet cable.)

7. Connect to the Receiver Web Interface

1. Access the receiver's Wi-Fi access point.
2. Connect your device to the R750 Wi-Fi access point using one of the following methods:
   • Scan the QR code displayed on the receiver or in the documentation. The SSID (network name) and password will be automatically configured on your smartphone.
   • Find the receiver access point SSID under the available Wi-Fi networks on your smartphone or computer. The default SSID is Trimble GNSS xxxx, where xxxx represents the last four digits of the receiver serial number.
3. Tap Connect to connect to the receiver access point. The default network password is abcdeabcde.
4. On your smartphone or computer:
   • Open a web browser and enter the IP address: http://192.168.142.1
   • Log into the web interface. The default login details are: User Name: admin, Password: password

(Image description: Screenshots showing iPhone and Android smartphone interfaces connecting to the Trimble R750 Wi-Fi network, displaying SSID and password.)

Understanding the Display

Screens

The screens that appear depend on the configuration and option settings of your receiver. Refer to https://receiverhelp.trimble.com/r750-gnss/ch_receiver-screens.html for more details.

Home screen

To go back to the Home screen, keep pressing the Escape button.

(Diagram description: A representation of the Trimble R750 receiver's Home screen with numbered elements indicating different data fields.)

Key Elements on the Home Screen:

• 1 Number of tracked satellites
• 2 Operation mode
• 3 Base station name and code
• 4 Internal battery state
• 5 Position solution
• 6 Horizontal precision estimate
• 7 Vertical precision estimate
• 8 Wi-Fi signal strength (RSSI): `*` = Internet connection (Wi-Fi). `A` = Access Point mode enabled.
• 9 UHF transmit frequency/channel
• 10 Output correction type
• 11 TX flashes when corrections are transmitted
• 12 LTE signal strength (RSSI)
• 13 `*` = Internet connection (LTE)
• 14 Number of tracked GPS satellites (G)
• 15 Number of tracked GLONASS satellites (R)
• 16 Number of tracked BeiDou satellites (B)
• 17 Number of tracked Galileo satellites (E)
• 18 Number of tracked QZSS satellites (Q)
• 19 Wired Ethernet connection mode
• 20 Available internal memory (Logging)

Status and Configuration Screens

Status screens

Briefly press the Escape button and then use the navigation keys.

(Diagram description: Flowcharts illustrating data flow for different operational modes. For Base mode: System -> Reference Station -> Antenna -> Ethernet -> Wi-Fi Client -> Wi-Fi Access Point. Also, Power Source -> Radio -> Output -> Heading -> LTE. For Rover mode: System -> Current Position -> Correction Source -> Antenna -> Ethernet -> Wi-Fi Client -> Wi-Fi Access Point. Also, Power Source -> Radio -> Output -> Heading -> LTE. For Radio or Heading modes: System -> Antenna -> Ethernet -> Wi-Fi Client -> Wi-Fi Access Point. Also, Power Source -> Radio -> Output -> Heading -> LTE.)

Configuration screens

Briefly press the Escape button and then use the navigation keys. To open a menu, press the navigation keys. To change an option within a menu, highlight the option and press the navigation keys. Press the navigation keys to confirm.

(Diagram description: A flowchart for 'All modes' showing configuration options: System Setup, Autobase, Reference Station, Antenna, Heading, Logging, Ethernet, Wi-Fi Client, Wi-Fi Access Point, LTE Modem, Serial Ports, Output, Radio, Relay, Tracking, MSS Corrections, Reset.)

Information and Compliance

Regulatory Information

For full legal and regulatory information, go to https://receiverhelp.trimble.com/r750-gnss/compliance-notices_r750.html.

Further Information

For more information about using the receiver, go to https://receiverhelp.trimble.com/r750-gnss. Help is also available in the receiver web interface.

©2021-2024, Trimble Inc. All rights reserved. Trimble, and the Globe & Triangle logo are trademarks of Trimble, registered in the United States and in other countries. All other trademarks are the property of their respective owners. Trimble Inc., 10368 Westmoor Drive, Westminster CO 80021, USA. P/N 127943, Revision F, May 2024. Doc ID 971194158.

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