Maintenance
Module 8023
6-21
DUAL FREQUENCY DETECTORS
A dual frequency detector is capable of operating at two different frequencies
that are selectable from within the Product setup menu Frequency menu
position. Selection is on a per memory basis giving the flexibility to change
operating frequency upon a change of product. Selection is simply HIGH or
LOW.
Having the ability to work with two different frequencies enable a much wider
mix of product type, packaging & operating mode to be accommodated by a
single detector.
Located behind the removable end plate of your detector search head case are
a modified search headboard and a dual receiver interface board.
There are no user replaceable components located on either board. Should the
boards develop a fault they will require replacing. Contact your local Group
Service Centre for help.
As with a single frequency detector the receiver board contains a pair of user
adjustable ferrite cores one for each operating frequency that can be used to
adjust the balance signal when the detector is in its quiescent state.
Removing the screwed metal bungs located on the removable end plate on the
search head case accesses the ferrite cores. Instructions as to its use are in the
“Functional Testing” section of this manual.
A simplified diagram showing the ferrite core position follows:
Summary of Contents for IQ2
Page 92: ...Maintenance Module 8023 6 1 Frequency links Tx Inductors Balance inductors ...
Page 101: ...Wiring Diagrams Module 10088 8 2 Figure 1 Optional External Sensor Connection Ladder Diagram ...
Page 102: ...Spare Parts Module 11050 9 1 SPARE PARTS CONTENTS Spare Parts Lists 2 ...
Page 104: ...Service Return Module 12005 8 1 SERVICE RETURNS FORMS CONTENTS Instructions 2 Form 3 ...
