Chapter 1 introduction, Items supplied, Items required but not supplied – Bird Technologies 8931-230SC13-Manual User Manual
Page 11: Optional accessories, Chapter 1 – introduction, Introduction
 
1
Chapter 1
Introduction
Bird 8930 Series Semiconductor Loads are general purpose, 50 ohm, 
coaxial RF transmission line terminations, useful as standby reject 
loads. They provide accurate, dependable, and low reflection line 
terminations over a frequency range of dc – 28 MHz, specially 
calibrated for greater stability at 13.56 MHz. Up to 10,000 watts can 
be dissipated.
The loads have 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 relieve internal pressure from 
coolant expansion. A blower with three axial fans is on the bottom of 
the load. The load’s simple and rugged design minimizes maintenance 
requirements.
Items Supplied
y
Load Resistor: Pre-filled with coolant at the factory
y
Detachable 3-wire power cable (without male plug for 230 Vac 
power cable)
y
Two (2) Shipping Plugs
y
Two (2) Vent Plugs
y
Instruction Manual
Items Required but
not Supplied
y
Coupling Kit: Connects the load to the RF line
y
Male plug for the power cable (230 Vac only)
Optional
Accessories
y
Interlock Thermoswitch: Automatically shuts off the generator to 
prevent overheating of the load