Bird Technologies SCC8 Series-Manual - Manual (Page 15)

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Chapter 1 Introduction
This instruction book is intended for use by operators of the Bird High Power
Cal Cart (HPCC). This chapter contains introductory information including
component descriptions and items supplied.
The HPCC is designed for immediate, effortless use. It has three primary com-
ponents. The Bird 4421 RF Power Meter displays RF power measurements.
Bird 4028 Series Power Sensors are highly accurate sensors that measure RF
power without requiring calibration or external couplers or attenuators. Bird
Moduloads are low reflection 50 Ω terminations that can dissipate 25 kW.
These components are installed on a cart for easy transportation. The cart is
suitable for use in a cleanroom environment, and is equipped with four swivel
casters for maximum maneuverability. The only setup required is adding cool-
ant and connecting AC and RF power.
Items Supplied
Stainless Steel Cart with the following items installed:
z Bird 4421 RF Power Meter
z Bird 4028 Series Sensor
z Bird 8640 or 8640B Series Moduload
z Cabling
z Instruction Manual
RF Power Meter
The Bird 4421 RF Power Meter measures forward and reflected RF power
when used with a Bird power sensor. Measurement units can be either Watts
or dBm. Because of the quality of the attached load, reflected power will be
negligible and can usually be ignored.
 Note: The 4421 is equipped with rechargeable batteries. These are
shipped uncharged. Connect the unit to AC power the first time you use
it to charge the batteries.
Power Sensor
Bird 4028 Series Power Sensors are designed for use in semiconductor pro-
cessing and calibration applications. 4028 Sensors are accurate to ±2%(2σ) at
specified calibration frequencies and power levels. Sensors are controlled by
the Power Meter.
Load
Bird Moduloads are self-cooling, nonradiating, low reflection terminations for
high power RF lines. They dissipate up to 25 kW with a VSWR of less than
1.1:1 from 1 kHz to 900 MHz.