Performance Tests, Gain and Gain Flatness

Section 5: Performance Tests

5.0 Introduction

This section describes some of the standard RF tests performed on production amplifiers before shipment. Where possible Paradise Datacom, LLC maintains computer automated RF test stations to ensure a high level of accuracy and consistency to production amplifier testing.

5.1 Gain and Gain Flatness

The amplifier gain is swept over the operating frequency range under small signal conditions to confirm the minimum gain and gain flatness specifications. The entire Compact Outdoor Amplifier is tested in a temperature chamber from -40°C to +55°C; and the gain is recorded.

5.2P1dB

The 1 dB Gain Compression Point is measured at discrete frequencies across the band to characterize the output power over the operating frequency range. The P1dB is a guaranteed minimum specification.

5.3 Input and Output Return Loss

The input and output return loss are measured in all production amplifiers. This is a measure of how closely the amplifier is matched to its characteristic impedance. The input impedance of the amplifier is a nominal 50 ohms while the output is matched to the waveguide complex impedance.

5.4 Spurious

Spurious signals are undesirable byproducts of amplifiers caused by nonlinearities within the amplifier and other system level components such as switch mode power supplies. These unwanted signals cause signal management problems in system applications. Out of band spurious signals cause interference to other pieces of equipment.

5.5 RF Sample Port

The RF Sample port is measured at discrete frequencies across the band and a calibration label is placed near the type N connector on the bottom of the unit. The sample port is approximately -40 dB down from the RF output. A label with the exact coupling ratio is attached to the amplifier chassis.

Operations Manual, HPA2, Compact Outdoor SSPA

205486 REV F

205486 REV F specifications

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Paradise 205486 REV F Performance Tests, Gain and Gain Flatness, Input and Output Return Loss

Models: 205486 REV F