Multiple Punched Columns; Corner Cuts; Single Card Feeding; Keyboard Locking - IBM 545 Output Punch 1 Reference Manual

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read station. This operation is faster than using the space
bar.
Multiple Punched Columns
Punch two or moredigits in one column by holding down
the multiple punch key while pressing the digit keys one at
atime. The keyboard is automatically shifted to numeric
operation when the multiple punchkeyis pressed.
Corner Cuts
Cards can have a normalupper-left or upper-right corner
cut. Cards with lower corner cuts (except lower-left corner
cut C-3, 30-degree, 0.130-inch base measurement) cannot
be fed. Round corner cut cards are acceptable.
Single Card Feeding
Whenthe cards are to be fed manually, one at a time, place
them directly in the card bed, to the right for punching or
in the center for reading. Do notinsert single cards in the
card hopper. When placing a card in the center of the card
bed, position it so that the column-1 edge is between the
feed rolls at the right of the read station. If the cardis
pushed in too far, improper feeding and duplicating may
result.
Keyboard Locking
_ The keyboardlocks under any of the following conditions:
1. The main line switch is turned off and then on while a
card is registered at the punch station. The clear switch
should be operated to movethe card to the stacker;
however, the card at the punchstation need not be re-
moved. One depression of the feed key brings a second
card down without advancing the first card, and restores
the machine to operating condition.
2. On the combination keyboard, when either the A or the
Z key is pressed in a column programmed for numeric
punching. Pressthe error reset key to unlock the key-
board.
3. A blank columnis duplicated in a field programmed for
numeric punching. This serves as a blank-column -'
detection device to ensure that a digit is punched in
every column of a numeric field that is being duplicated.
To unlock the keyboard, press the error reset key or
the alphabetic shift key on the combination keyboard.
On a machinewith the self-checking feature installed,
press the backspace key.
4. Acard is not registered at the punch station. It is im-
possible to do any punchingor spacing unless a cardis
registered at the punch station. To move a card into
punchingposition, press the register, the feed, or (with
the auto feed switch on) the release key.
5. The register key or the feed key is pressed whena cardis
already registered at the punchstation. Press the error
reset key to unlock the keyboard.
Suspending Automatic Duplication on First Card
Master information in the first card of each new group must
be keyed. Automatic duplication must be suspended for
that card by turning off the auto skip/dup switch. Because
this requires the manualsetting of the auto skip/dup switch
each time master information changes, consideration should
be given to proper card design as an aid to mostefficient
Operation.
Wheneverpossible, program thefirst field in a card for
manual operation. This gives the operator a chance to turn
the auto skip/dup switch off before starting to punch the
first card of a new group.
Several recommended procedures for punchingthefirst
card of each groupare (the procedures vary depending on
conditions brought about by differences in card design):
1. Turn the auto skip/dup switch off when thefirst card of
a new groupis registered at column 1. |
2. Punch the complete card.
3. Turn the auto skip/dup switch on when the second card
of the groupis registered at column 1. (The switch
could have been returned on after the master informa-
tion was punched.)
Automatic duplication should not immediately follow an
automatic skip.
.
1. Punch thefirst field.
2. Automatically skip the second field (auto skip/dup switch
on).
3. Turn off the auto skip/dup switch; punch thethirdfield.
4. Punch the fourth field; turn on the auto skip/dup switch.
Sometimes other factors in the use of the cards makeit
necessary for automatic duplication to follow an automatic
skip. In such a case, study the two possible procedures
and follow the best one:
1. Long-skip field
a. Punch thefirst field.
b. Automatically skip the second field. During the skip,
turn off the auto skip/dup switch to prevent auto-
matic duplication in the following field. (This can be
doneif the skip is fairly long.)
c. Punch the third field and turn on the auto skip/dup
switch.
2. Short-skip field
a. Turn off the auto skip/dup switch when thecardis
registered at column 1.
b. Punch thefirst field.
c. Press the skip key to skip the secondfield.
d. Punch the third field and turn on the auto skip/dup
switch.
When automatic duplication is immediately followed by
an automatic skip, punchthefirst card as follows:
1. Turn off the auto skip/dup switch whenthe cardis reg-
istered at column 1.
2. Punch thefirst field.
3. Punch the second field. (Either during, or at the end of
Keypunch Mode
29

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