Teletype 33 Manual

TELETYPE CORPORATION
Skokie, Illinois, U.S.A.
SECTION 574-100-103TC
Issue l, April 1969
33
TELETYPEWRITER SETS
CIRCUIT DESCRIPTIONS
CONTENTS
1. GENERAL
2. SWITCHED NETWORK SER VICE
TEST CIRCUIT . . .... .
BREAK RELEASE CIRCUIT
RESTRAIN CIRCUIT .
CLEAR KEY CIRCUIT
ANSWER CIRCUITS
A. Automatic Answer
B. Manual Answer . .
ORIGINATE CIRCUIT
ROTARY DIAL OR PULSING CARD
DIALER CIRCUIT
A . On-Hook ....
B. Originating a Call
C. Answering a Call
"TOUCH-TONE" * DIALER CIRCUIT
SPEAKER AMPLIFIER CIRCUIT
SIGNAL GENERATOR CIRCUITS
A. Signal Line Circuit . . .
B. Signal Generation Circuit
C. Control and Shift
SELECTOR MAGNET DRIVER CIRCUIT
LOCAL AND MOTOR CONTROL CIRCUITS
READER CONTROL CIRCUITS
ANSWER-BACK CIRCUITS
*Service mark of AT&T Company
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CONTENTS
EOT DISCONNECT CIRCUITS
RINGER AND OFF-HOOK CIRCUITS
OUT OF SER VICE CIRCUIT
PAPER ALARM CIRCUIT
POWER CIRCUITS . . . .
3. CIRCUIT SWITCHING SERVICE
POWER SUPPLY CIRCUIT . . .
LOCAL -REMOTE CONTROL CIRCUITS
A. Proceed -to-Dial Circuit
B. Connect Circuit
C. Local Circuit . . . . .
MOTOR DELAY TIMER CIRCUIT
SELECTOR MAGNET DRIVER CIRCUIT
NEUTRAL SIGNALING
A . Circuit Interconnections
B. Idle Line Condition
C. Initiating a Call
D. Connection . . . . .
E . Disconnect . . . . .
F. Local Off-Line Operation
POLAR ADAPTER
A. General ... .
B. Receiving Polar Relay
C. Sending Polar Relay
D . Connect Control Timer
E. Current Amplifier . . .
F. Circuit Interconnections
G. Idle Line Conditions . .
©1962, 1963, 1964, and 1969 by Telet y pe Corporation
All rights reserved
Printed in U.S.A.
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