BRUEL & KJAER 6301 User guide

Instructions
· .. and Applications ~
Paper Tape Punch
Type
6301
A paper tape punch with two inputs.
The first is used
for the punching
of a 14 bit 8-4--2- 1 BCD input in a
standard punch code, using a
choice
of two formats. The second is used
for the direct punching of an 8 bit
input. Interface is contained within
the punch to
allow the direct
connection between the inputs and
other B & K instruments capable of
providing a digital output.

PAPER TAPE PUNCH TYPE 6301
August 1972

CONTENTS
1. INTRODUCTION ...................................... 5
2. CONTROLS .......................................... 7
2.1. Front Panel of Tape Punch Type 6301 ............. 7
2.2. Rear
Panel of Tape Punch Type 6301 .............. 8
3. OPERATION ........................................ 10
3.1. Preliminary Adjustments ............. . ........ 10
3.2. Loading Paper Tape
.......................... 10
3.3. Operation
as a Recording Medium ............... 12
3.4. Operation
with 8 & K Real Time Third Octave
Analyzer Type 3347 .......................... 13
3.5. Operation
with 8 & K Digital Encoder,
Type 4421 ................................. 15
3.6. Operation
with 8 & K Manual Data Unit,
Type 5599 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3. 7. Operation with 8 & K Digital Event Recorder,
Type 7502 ................................. 19
3.8. Operation
with 8 & K Computer, Type 7504 ....... 21
4. DESCRIPTION ....................................... 23
4. 1. General . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . 23
Parallel to Series Converter and Control Logic ...... 24
Channel Counter ............................. 24
Code Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Data and Control Line Switch .................. 25
Punch Circuits
.............................. 25
4.2. Rear Connectors and Control Signals
............. 26
DATA INPUT socket ......................... 26
SUPPLEMENTARY SOURCE INPUT socket ....... 31

4.3. Channel Counter ............................. 34
4.4. Code Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.5. Punch Formats and Codes ..................... 42
5. SPECIFICATION~ .................................... 48
5.1. DATA INPUT ............................... 48
5.2. SUPPLEMENTARY SOURCE INPUT
............ 48
5.3. Punch
Output (DATA INPUT) .................. 48
5.4. Punch Output (SUPPLEMENTARY SOURCE
INPUT)
.................................... 49
5.5. Channel Counter
............................. 49
5.6. Code Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5.7. Power Requirements
.......................... 50
5.8. Mechanical Details ........................... 50
5.9. Accessories Included . . . . . . . . . . . . . . . . . . . . . . . . . . 50
5.1 0. Accessories Available . . . . . . . . . . . . . . . . . . . . . . . . . 51

1. INTRODUCTION
Many present day instruments are capable of producing results at a far
faster rate than
the conventional methods used can record them. Where the
instruments
form a part of some feedback monitoring loop, or are operating
on line
with a computer, this problem is of little consequence, since their
results can be assim ilated just a quickly as they are produced. However,
outside
of a feedback loop or where the cost of using a computer on line
cannot be justified, very real problems can result, since conventional
recording methods are incapable
of recording at the same rate. The outcome
of this is that the instrument must remain idle while its results are recorded.
Further, the
time during which it remains idle is huge when compared with
the time taken to produce the results.
Where the instrument
is being used to measure a non-varying function, or
alternatively one which varies at extremely low frequency, this time lapse
can be tolerated. However, if this function is of a continuously variable
nature,
it becomes a serious handicap, since much valuable information
about
the function can be lost while one set of results is recorded. It
becomes obvious that in such cases, a different approach to recording is
required.
Conventional recording, such
as the use of a level recorder, is of an
analogue nature. When the instrument in use is capable of providing a digital
output, an obvious alternative would be to use digital recording techniques.
The most basic
of these is to record on punched paper tape, as provided by
the Paper Tape Punch, Type 6301. Recording on punched paper tape is a
reliable, and relatively low cost method, which can offer an order of
magnitude increase in the recording rate. Such recordings can then either be
translated on an instrument such as a teletype, or used as a data input to a
computer.
The Paper Tape Punch Type 6301
is a modified version of the GNT
model 34. Interface has been added to allow the direct connection of other
B & K instruments.
Two inputs are provided, a DATA INPUT and a
SUPPLEMENTARY SOURCE INPUT. The DATA INPUT allows the input
of a 14 bit 8-4-2-1 BCD code, as provided by the digital outputs of the
5

Real-Time Third Octave Analyzer Type 3347, and the Digital Encoder
Type 4421. The
SUPPLEMENTARY SOURCE INPUT allows the input of
an 8 bit code, as provided by the Manual Data Unit Type 5599, the Digital
Event Recorder Type 7502, and the Computer
Type 7504.
Where the DATA INPUT is used, as with the 3347 and the 4421, the
input BCD signal is passed through interface circuitry which converts it into
a punch code. This punch code is designed into the 6301, and may not be
altered
without internal circuitry changes. One of three codes, ASCII,
Friden's Flexowriter, and IBM PTTC/8, may normally be chosen, but other
codes may be designed in on request, although this will, of course, incur
extra cost. A choice of two formats is also available. These are Typewriter
Format and Computer Format, and are selected via a switch. These formats
are again controlled via internal circuitry in the interface. Where the
SUPPLEMENTARY SOURCE INPUT is used, as with the 5599, the 7502,
and 7504, the code conversion circuitry in the interface is bypassed, and the
input is punched directly. Note that where data is available for punching at
both inputs, that at the SUPPLEMENTARY SOURCE INPUT will always
take
priority. All punching is carried out on standard one inch paper tape
with 8 information channels.
The 6301
is provided with an auto transformer such that it may be run
off a variety of voltage supplies between 100 and 240 V AC, 50 Hz. Where
the supply
is 60Hz, however, a special drive wheel in the punch must be
fitted.
6

2. CONTROLS
2.1. FRONT PANEL OF TAPE PUNCH TYPE 6301
Fig.2.1. Positions of Switches-and Controls, Front Panel
Below the Punch Mechanism
will be found two switches.
TYPEWRITER FORMAT/
COMPUTER FORMAT
Pressing the left half or right half of the
switch
will select Typewriter Format of
punching or the Computer Format of
punching respectively.
7

POWER OFF/ON
Pressing the left half or right half of this
switch switches the power
off or on respec-
tively. "Power On" indication is provided
by a light above the switch.
On the Punch Mechanism, either side of the puncher itself, will be found
two pushbuttons, marked with symbols. The left hand pushbutton is
marked El· 0 and the right hand pushbutton is marked¢¢.
TAPE HANDLER BUTTON
IJ·D
FEED CONTROL BUTTON
¢::1¢
Pressing the left hand side of this push-
button switches the tape handIi ng system
on.
Pressing the right hand side of it
switches the tape handling system off.
While the left hand side of this pushbutton
is held down, the Punch Mechanism will
feed plain tape. When it is released, the
tape feed
will cease. Pressing the right hand
side
of it has no effect.
On top of the puncher itself will be found a white, unmarked
pushbutton. This
is the TAPE LATCH RELEASE.
TAPE LATCH RELEASE While this pushbutton
is held down, the
tape feed and punching mechanism is
released, allowing a new tape to be
inserted.
2.2. REAR
PANEL OF TAPE PUNCH TYPE 6301
DATA INPUT
SUPPLEMENTARY SOURCE
INPUT
VOLTAGE SELECTOR
8
Multipin socket for the connection of the
digital output of a 14 bit 8-4-2-1 BCD
source, such
as the 3347 or 4421.
Multipin socket for the connection of an 8
bit source, such as the 5599, 7502 or the
7504.
For selection of the appropriate mains
voltage.