Chapter 1 introduction, Items supplied, Items required but not supplied – Bird Technologies 8921SC13-Manual User Manual
Page 11: Optional accessories, Introduction

1
Chapter 1
Introduction
Bird 8920 Series Semiconductor Loads are portable, 50 ohm, coaxial
RF transmission line terminations. They are designed for frequency
ranges of dc – 28 MHz, specially calibrated for greater stability at
13.56 MHz. They provide accurate, dependable, and low reflection
line terminations. Up to 5000 watts of RF power can be dissipated.
The load has a coolant chamber surrounded by radiator fins. The
front and rear fins form mounting flanges which can be used as
supports for freestanding use or as brackets for fixed mounting. A
pair of vent plugs at the top of the unit relieves internal pressure
from coolant expansion. The load’s simple and rugged design
minimizes maintenance requirements.
Items Supplied
"
Load Resistor: Pre-filled with coolant at the factory
"
Two Shipping Plugs
"
Two Vent Plugs
"
Instruction Manual
Items Required but
not Supplied
"
Coupling Kit: Connects the load to the RF line
Optional
Accessories
"
Interlock Thermoswitch: Automatically shuts off the RF generator
to prevent overheating of the load