Connect Power to the PwrPak7

To connect power to the PwrPak7:

  1. Connect the M12 connector of the PwrPak7 Power Cable to the PWR port on the PwrPak7. See PwrPak7 Power Cable for information about this cable.

  2. Connect the bare wires of the power cable to a 9 to 36 VDC power supply.
    For details about the power supply required, see Power Supply Requirements for the PwrPak7.

When connecting a single battery to the PwrPak7 Power Cable (01019764), it is recommended to connect the (+) Positive side of the battery to +VIN_A and +VIN_B wires, and (-) Negative side of the battery to -VIN_A and -VIN_B.

This configuration reduces voltage drops in the cable and will extend usable battery life somewhat when running on battery only (not charging).

Fuse for the Power Supply

Install a user supplied 2 A slow blow fuse in the positive line of the connection to the power source to protect the power supply wiring and your warranty.

Fuse for PwrPak7 Power Supply

Fuse/Holder Recommendations 12 V System

Fuse

Holder

BK/MDA-2-R Fuse (or equivalent)

BK/MDL-2-R Fuse (or equivalent)

BK/HFA-R Fuse (or equivalent)

The fuse and holder are made by Cooper/Bussmann; available from Digikey.

Vehicle Installation

If the receiver is installed in a vehicle, it is recommended that a dedicated battery be provided for the receiver that is isolated from the engine starter battery. When a vehicle engine is started, the voltage on the starter battery can dip below the PwrPak7 minimum voltage or cut-out to ancillary equipment causing the receiver to lose lock and calibration settings.

Dedicated Battery for PwrPak7

Seamless Battery Swap

Two batteries can be connected at the same time. If a battery requires charging, it can be removed without experiencing any power interruption (battery A or B).

Seamless Battery Swap

-VIN_A and -VIN_B are connected together inside the PwrPak7 and are also connected to DGND (Digital I/O ground and GNSS Cable shell). Power sources connected to the PwrPak7 must be floating, or have their (-) terminals connected to the same ground reference as any equipment connected to PwrPak7 (including the GNSS antenna).

Power sources with a positive ground MUST NOT be used, or severe damage to the PwrPak7 and/or connected equipment will result.