Circuit Diagrams and Functional Block Diagrams

Overview of this Section

Use of Library

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WB1400 Circuit Diagrams

Printing and Viewing Tips

The table below contains links to the most useful diagrams. As these are large in size, if you simply click the link the Browser will shrink the picture to fit your window and all the details will be invisible.

Please RIGHT-CLICK the photograph link and Save As... to your hard disk for viewing or printing later.

Loudspeaker WB1400

The plastic office version - WB29663

  Circuit Diagram

Loudspeaker WB1401

The ruggedised version for damp areas - WB29664

  Circuit Diagram

Receiver Speech WB1400

Warning Broadcast Receiver Box WB29759

  Circuit Diagram

  Block Schematic

Receiver Signalling WB1400

The Siren Control Receiver WB29452

  Circuit Diagram

  Block Schematic

Wiring at Customers Premises

Printing and Viewing Tips

The table below contains links to the most useful diagrams. As these are large in size, if you simply click the link the Browser will shrink the picture to fit your window and all the details will be invisible.

Please RIGHT-CLICK the photograph link and Save As... to your hard disk for viewing or printing later.

Line Powered Receiver Speech WB1400

Wiring Diagram WB29670 Sh1 (800W x 1200H pixels)

  Wiring Diagram

Line Monitored Receiver Signalling WB1400

Wiring Diagram WB29670 Sh2 (800W x 1200H pixels)

  Wiring Diagram

Locally Powered Receiver Speech WB1400

Wiring Diagram WB29670 Sh3 (800W x 1200H pixels)

  Wiring Diagram

Locally Monitored Receiver Signalling WB1400

Wiring Diagram WB29670 Sh4 (800W x 1200H pixels)

  Wiring Diagram

Receiver Speech at ROC Post

Wiring Diagram WB29670 Sh5 (800W x 1200H pixels)

  Wiring Diagram

Combined site with both Receiver Speech & Signalling

Wiring Diagram WB29670 Sh6 (800W x 1200H pixels)

  Wiring Diagram

Receiver Signalling at HV Substation

Wiring Diagram WB29670 Sh7 (1500W x 1100H pixels)

  Wiring Diagram

Receiver Speech at HV Substation

Wiring Diagram WB29670 Sh8 (1500W x 1100H pixels)

  Wiring Diagram

Provision on Loaded Local Lines

Wiring Diagram WB29670 Sh9 (800W x 1200H pixels)

  Wiring Diagram

Exchange End of ROC Post Circuit

Wiring Diagram WB29670 Sh10 (800W x 1200H pixels)

  Wiring Diagram

Monitor Unit WB1400

Mains operated power supply and monitor alarm WB29751, which is used for Locally Monitored Receiver Signalling ( WB29670 sht 4)

  Circuit Diagram

  Block Schematic

Filter Unit WB1410

Wiring Diagram WB29747 Sh1 (800W x 1200H pixels)

  Wiring Diagram

Exchange Equipment

Printing and Viewing Tips

The table below contains links to the most useful diagrams. As these are large in size, if you simply click the link the Browser will shrink the picture to fit your window and all the details will be invisible.

Please RIGHT-CLICK the photograph link and Save As... to your hard disk for viewing or printing later.

Unit WB1400/1B

Audio Feed and Call Detector : WB29600

  Circuit Diagram

  Block Schematic

Unit WB1400/2B

Receive Amplifier : WB29596

  Circuit Diagram

  Block Schematic

Unit WB1400/4B

Distribution Amplifier : WB29601

  Circuit Diagram

  Block Schematic

Unit WB1400/5B

Local Line Power and Monitor Unit : WB29738

  Circuit Diagram

  Block Schematic

Unit WB1400/7B

X & Y Path Changeover Unit : WB29599

  Circuit Diagram

  Block Schematic

Unit WB1400/10A

Signalling Unit [UKWMO Group] : WB29692

  Circuit Diagram

  Signalling Voltages

Equipment Carrier WB1401

Control Point Exchange : WB29603

  Block Schematic

Equipment Carrier WB1402

Distribution Exchange : WB29604

  Block Schematic

Filter Unit WB1400

Filter on the distribution shelf : WB29602

  Circuit Diagram

Filter Unit WB1402

Filter on the distribution shelf : WB29624

  Circuit Diagram

Miscellaneous

Printing and Viewing Tips

The table below contains links to the most useful diagrams. As these are large in size, if you simply click the link the Browser will shrink the picture to fit your window and all the details will be invisible.

Please RIGHT-CLICK the photograph link and Save As... to your hard disk for viewing or printing later.

CCP Tone Sequences

WB29641 Sht4, All the speech and Signalling tone sequences and durations

  Chart

CCP Flexible Cable Spec

WBW29607 Sht10, Wiring of the plug and cable connecting the CCP to the Terminating Unit

  Diagram

Terminating Unit WB1400

WB29628 Sht1, Unit at secondary location, supplies power and terminates external lines

  Power Supply Diagram

  Unit Wiring

Power Unit WB1400

WB29742 Mains Power Unit within the Terminating Unit WB1400

  Circuit Diagram

Tester WB1402

The CCP Tester : WB29755

  Circuit Diagram

  Block Schematic

Older ERA 1 Communications

Printing and Viewing Tips

The table below contains links to the most useful diagrams. As these are large in size, if you simply click the link the Browser will shrink the picture to fit your window and all the details will be invisible.

Please RIGHT-CLICK the photograph link and Save As... to your hard disk for viewing or printing later.

Receiver Carrier WB400A

WB28013, circuit diagram of carrier receiver

  Circuit Diagram

Balancing Unit WB400A

WB28083, Used to reduce radio interference pickup on WB400 and latterly WB1400 signals

  Circuit Diagram

ROC Post wiring with a Unit Intercom AD3460, Teletalk and WB400

ROC Monitoring Post in ERA1 with Grey Box Teletalk and WB400 receiver.

  Diagram