BIRD Wattcher 3170B, Operation Manual

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1
Chapter 1 Introduction
General
This publication refers to the Model 3170B which is a member of the Bird Model 3170B Series of High Speed
Wattcher RF Monitors. Models included in the series are listed in
Table 1 . All models will generally be referred to
as a Wattcher unit through out this manual.
The information in this instruction book pertains to all models except noted differences referred to in the text and
in the
"Difference Data Sheet" on page 26 .
Table 1 - Various Models
Items Supplied
2
Items Required
For power monitoring each port must contain a plug-in element. The determination of elements required is based
on line section size, frequency band of use and RF power level range. Refer to
"Element Tables" on page 22 .
Optional Accessories
Bird offers a larger number of cable assembly lengths for remote line sections and meters. For different power or
frequency requirements
see "Element Table Selection" on page 22 .
Purpose and Function
The Model 3170B Series High Speed Wattcher unit is a two channel power monitoring system for use in 50 ohm
coaxial transmission lines. Adjustable set points allow user to preset maximum reflected and minimum forward
power trip points.
Model Number Power Range Comments
3170B 100 mW - 10 kW Built in Line Section
3170B400 100 mW - 10 kW Built in Line Section.
No reset or audible alarm
function,
Extended AFM timing.
3171B 250 W - 100 kW Uses External Line
Section
3171B020 300 W - 60 kW
Qty Description
1 3170B Series High Speed Wattcher
1 AC Power Cord
1 Fuse drawer for 230V operation
2 Fuses for 230 V operation