
You initiate signaling by pressing the calling
pushbutton (see section 18.1.2 TCF–10B
Operation for the procedure). The signaling tone
oscillator will operate and send a 370 Hz signaling
tone to the Transmitter (at the originating end).
At the terminating end of the system, the receiver
sends the signaling tone to the Signaling Tone
Detector (filtered by I4,8,9,10 and detected by
I4/5,6,7), causing relay K1 to operate, closing the
alarm contacts.
The normally-open (N.O.) alarm relay contacts
are wired in series with the external normally-
closed hookswitch contacts (see Figure 18-6). The
normally-closed contacts allow alarm signaling to
be interrupted when the handset (at the termi-
nating end) is removed from its hookswitch
assembly.
April 1997
Page 18–5
Chapter 18. Optional Voice Adapter Module
18
Summary of Contents for TCF-10B
Page 2: ......
Page 32: ...Page 1 18 April 1997 TCF 10B System Manual Technologies Inc USER NOTES ...
Page 49: ...December 1996 Foigure 2 15 TCF 10B Catalog Numbers Module Style Numbers 1355D19 Page 2 17 ...
Page 57: ...Page 3 8 April 1997 TCF 10B System Manual Technologies Inc USER NOTES ...
Page 58: ...April 1997 Figure 3 3 TC 10B TCF 10B Mechanical Outline Drawing 1354D48 Page 3 9 ...
Page 62: ...Page 4 2 January 1996 TCF 10B System Manual Technologies Inc Figure 4 1 Extender Board ...
Page 88: ...Page 6 12 April 1997 TCF 10B System Manual Technologies Inc 8 RECEIVER LOGIC ...
Page 89: ...April 1997 Page 6 13 Chapter 6 Routine Adjustment Procedures 6 ...
Page 95: ...April 1997 Figure 7 1 TCF 10B Functional Block Diagram 1354D13 Page 7 5 ...
Page 117: ...Page 10 12 January 1996 TCF 10B System Manual Technologies Inc USER NOTES ...
Page 123: ...Page 11 6 Figure 11 2 TCF 10B Transmitter Schematic 1355D71 April 1997 ...
Page 129: ...Page 11 12 April 1997 TCF 10B System Manual Technologies Inc USER NOTES ...
Page 143: ...Page 13 6 April 1997 TCF 10B System Manual Technologies Inc USER NOTES ...
Page 167: ...Page 14 24 April 1996 TCF 10B System Manual Technologies Inc USER NOTES ...
Page 189: ...April 1997 Figure 16 7 2 Frequency Directional Comparison Functional Block Diagram Page 16 7 ...
Page 190: ...Page 16 8 Figure 16 8 3 Frequency Directional Comparison Functional Block Diagram April 1997 ...
Page 204: ...April 1997 Figure 16 11 TCF 10B Receiver Logic Schematic CF30RXLMN Sheet 1 of 3 Page 16 21 ...
Page 205: ...Page 16 22 Figure 16 12 TCF 10B Receiver Logic Schematic CF30RXLMN Sheet 2 of 3 April 1997 ...
Page 206: ...April 1997 Figure 16 13 TCF 10B Receiver Logic Schematic CF30RXLMN Sheet 3 of 3 Page 16 23 ...
Page 214: ...Page 17 8 January 1996 TCF 10B System Manual Technologies Inc USER NOTES ...
Page 232: ...Page 18 18 April 1997 TCF 10B System Manual Technologies Inc USER NOTES ...