Trouble Recorder: Difference between revisions - The Telecommunications Inventory Wiki

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A '''trouble recorder''' is a device that punches perforated cards to indicate trouble in a crossbar telephone system. Similar to the earlier [[trouble indicator]], the trouble recorder is called in by common control circuits such as markers, transverters, and pretranslators whenever a problem is encountered while placing a call. After being connected to the circuit in trouble through the Master Test Connector (MTC), the trouble recorder punches and ejects a card that contains information that can be used by maintenance workers to find and repair faults.

[[File:Trouble-recorder.png|thumb|The trouble recorder in the 5XB at Connections Museum Seattle ]]

A '''trouble recorder''' is a device that punches perforated cards to indicate [[trouble]] in a crossbar telephone system. Similar to the earlier [[trouble indicator]], the trouble recorder is called in by common control circuits such as [[Marker|markers]], [[Transverter|transverters]], and [[Pretranslator|pretranslators]] whenever a problem is encountered while placing a call. After being connected to the circuit in trouble through the Master Test Connector (MTC), the trouble recorder punches and ejects a card that contains information that can be used by maintenance workers to find and repair faults.

Trouble recorders are also used on tests made by maintenance workers. When running a test, a craftsperson can request a detailed record of their test, which will be produced on demand by the recorder.

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== Technical Details ==

[[File:Trouble-recorder-operating.mov|thumb|The trouble recorder with the cover off, punching a card.]]

The trouble recorder contains 120 punches, 60 in the front, and 60 in the back. Trouble cards are shuttled through the recorder one line at a time by a [[wikipedia:Geneva_drive|geneva mechanism]]. At each line, the card pauses, and some combination of the 120 holes are perforated. Two lines of 60 holes can be perforated at one time, which means that the 18 line card must step forward and stop nine times before it is ejected from the machine.

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-A '''trouble recorder''' is a device that punches perforated cards to indicate trouble in a crossbar telephone system. Similar to the earlier [[trouble indicator]], the trouble recorder is called in by common control circuits such as markers, transverters, and pretranslators whenever a problem is encountered while placing a call. After being connected to the circuit in trouble through the Master Test Connector (MTC), the trouble recorder punches and ejects a card that contains information that can be used by maintenance workers to find and repair faults.
+[[File:Trouble-recorder.png|thumb|The trouble recorder in the 5XB at Connections Museum Seattle ]]
+A '''trouble recorder''' is a device that punches perforated cards to indicate [[trouble]] in a crossbar telephone system. Similar to the earlier [[trouble indicator]], the trouble recorder is called in by common control circuits such as [[Marker|markers]], [[Transverter|transverters]], and [[Pretranslator|pretranslators]] whenever a problem is encountered while placing a call. After being connected to the circuit in trouble through the Master Test Connector (MTC), the trouble recorder punches and ejects a card that contains information that can be used by maintenance workers to find and repair faults.
 Trouble recorders are also used on tests made by maintenance workers. When running a test, a craftsperson can request a detailed record of their test, which will be produced on demand by the recorder.
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 == Technical Details ==
+[[File:Trouble-recorder-operating.mov|thumb|The trouble recorder with the cover off, punching a card.]]
 The trouble recorder contains 120 punches, 60 in the front, and 60 in the back. Trouble cards are shuttled through the recorder one line at a time by a [[wikipedia:Geneva_drive|geneva mechanism]]. At each line, the card pauses, and some combination of the 120 holes are perforated. Two lines of 60 holes can be perforated at one time, which means that the 18 line card must step forward and stop nine times before it is ejected from the machine.