Before you begin

Review Operating Procedures & Safety Precautions for safety precautions – the GPA35 operates at high power and radiates RF power. Read that page before applying power.
Confirm your DC supply and cabling can deliver the required input (see Test Setup below) and that RF cabling/loads are rated for the GPA35's output power (Overview & Features – up to 35W / +45.4 dBm).
Ensure the installation site can provide the forced-air cooling described in Maintenance & Repair (minimum 20 CFM) – do not power the unit without adequate airflow.

Test Setup

GPA35 recommended test setup

GPA35 cable polarity

1. Mounting

Mechanical envelope: 1.6in (H) x 2.9in (W) x 5.6in (L), under 7 lbs (see Overview & Features).
The GPA35 is conduction-cooled with adaptable mounting; the mounting plate can be designed to your system's needs.
Mount so the heatsink fin airflow path is unobstructed in the direction your installation's airflow moves.

2. Connect RF

RF connectors are SMA. RF1 is the PA input and RF2 is the PA output.
Because the GPA35 is bi-directional, RF2 can instead be used as the receive port from the antenna, with RF1 routed to your digitizer.
Do not apply RF input above the rated input level for your configured gain setting.

3. Connect DC power

Input range: 12VDC-48VDC (Overview & Features).
Red is the positive reference; black is ground.
Verify supply polarity and voltage before connecting – reverse polarity or over-voltage can damage the unit.
Ensure your supply can source the required power at your configured output level:

Output Power	DC Power Consumption
35W (full output)	100-120W (varies with signal bandwidth)

4. Connect the host interface

Connect USB-C to your host/monitoring system for telemetry streaming and Configuration via libqynetic control via libqynetic.
TODO confirm default enumeration/discovery method for the host interface.

5. Power-up sequence

Confirm cooling airflow is running.
Apply DC power.
Confirm the unit enumerates / is reachable from the host running libqynetic (see Configuration via libqynetic).
Apply an RF input only after confirming the unit is configured for your intended gain/attenuation and RF path setting.

6. First configuration

Once powered and connected, configure the RF path, filter, attenuation, and gain settings via libqynetic before driving RF power through the unit – see Configuration via libqynetic.