Pioneer MSX PX-TB7 User manual

Operating
Instructions MSX
PX-TBT
Thank you For buying this Ptonear product.
Pfasae read through these operating insinjctions and than you will know how to operate your model properly. After you have
finished reading the instructions, put them away in asafe place for future raferertce.
In accordance with the power and voltage requirements of differing areas, the following model names are used to designate
rrvodels with differing electrical specHications.
C,!}PIONEER*

-CONTENTS
Introduction
Applicatlorts
Before Operation ...
Connectlorts
Panel Facilities
Operation
Specifications
Troubleshooting ..
Interface
This unit is made to function by commands sent from a personal computer. In order to obtain optimum perfor-
mance from your unit, read through these instructions together with the "BASIC INSTRUCTIONS" accompanying
the personal computer.
INTRODUCTION
Thank you very much for having purchased this PX-
TB7 tablet manufactured by PIONEER.
The PX-TB7 tablet has been developed by PIONEER
using the latest advances In technology as a simple Irv
put device for PIONEER'S personal computer Ithe
PX-71 and for MSX personal computers In general. It
features superb operational ease as adigitizer and
handwritten Input device.
Before proceeding to operate your tablet, take the
lime to read through all the instructions in tNs manual.
This will enable you to use the functions of your tablet
to maximum effect.
Place these instructions in asafe place for future
reference. Should you need to consult them, you will
then know where they are.
APPLICATIONS
What the tablet can do for you
This tablet is asimple input device. By means of aper-
sonal computer, it allows you to print out using a
printer, or display using amonitor or TV screen,
characters, letters and pictures exactly as they were
written or drawn by hand on the tablet, without com-
plicated operations and procedures. Drawing graphics
and patterns using a keyboard demands agreat deal of
both time and effort since the coordinates of the pic-
ture elements making up the graphics or patterns must
be calculated or measured. The tablet, on the other
hand, frees you from this tedium: all you have to do to
draw apicture or pattern is input asimple program.
The PX-TB7 has been designed to display top-
notch operational ease, and it has the following
features.
•AS size plain paper can be used,
AS size paper (146 x210 mml. which is easily ob-
tainaUe at a stationery store, can be used as it is.
If it is not easy to obtain AS size paper, simply cut
A4 size paper in half. Each half will then have
dimensions identical to those of AS size paper.
•Aclamp is provided to secure the paper.
The paper can be held firmly with the clamp provid-
ed. There is less chance that the paper will move
while apicture or pattern is being drawn.
•The "touch pen" has aswitch function.
The pen is provided with aswitch which functions
in exactly the same way as the switch on the tablet
Itself. This means that, while moving the pen, you
can easily operate the switch with the same hand.
This also comes in handy when using the overlay
sheet with the accessory ROM cartridge.
^Laj is atrademark of Microsoft Corp, of the U.S. 3

BEFORE OPERATION
Do not press down hard on the pan when
writing.
The surface of the panel, on which the graphics,
pictures and patterns are created, is structured
with thin resistive sheets piled on top of one
another with very small intervals between.
Therefore, It does not take kindly to rough use or
extremely firm or strong pressure.
Place the paper over the surface for use.
For use, first place asheet of A5 size paper on top
of the panel surface to prevent the surface from
being scratched or marked.
Use apen with asoft tip.
Use the accessory "touch pen" to write on the
panel. This will prevent the surface from being
scratched or marked. If you want to use afelt-
tipped pen, n>ake sure that the tip is round and
soft. Avoid using bail-point pens, fountain pens
and all other pens with asharp or hard point.
When disconnecting the connecting cord,
hold the plug —not the cord itself— and pull
The cord may break if the cord is lugged instead
of the plug. Do not pass the cord underneath fur-
niture or between objects which might damage it.
Do not allow knots lo be formed in the cord.
Refer to the separate Video Art Operating In-
structions for details on how to handle the ac-
cessory ROM cartridge and overlay sheet,
®Avoid use in very hot or vary humid loes-
Do not place the unit in alocation where it will be
exposed to direct sunlight or by the side of a
heating appliance. This may adversely affect the
cabinet and the internal parts. Placing the unit in
an excessively damp or dusty place will invite
breakdowns and failures. (Avoid placing or using
the unit on akitchen table or in aplace subject to
soot, steam or heat.)
(D Do not attempt to inspect or modify the in-
side parts.
Do not open the cabinet to inspect inside or make
adjustments. PIONEER will not be held responsi-
ble for any deterioration in performance resulting
from remodeling or amodification conducted by a
customer.
(t) Take care when using the unit near water.
If water is spilled over the panel surface, first wipe
it off with adry cloth and then allow the unit to
dry out in anormal temperature before use.
Cabinet maintenance
Use asoft, dry cloth to clean the cabinet. If the cabinet
is badly stained or soiled, dip asoft cloth into adiluted
solution of water and neutral detergent, wipe off the
stains and then wipe dry with a dry cloth. Do not use
benzene, thinr>ers, insecticides or other volatile
chemicals on or near the cabinet or panel surface since
these substances will corrode the surface.
3

CONNECTIONS
Connection with PIONEER'S personal
computer (PX-71
Connect the other end of the connecting cord to the
controller 1or controller 2on the PX-7 personal com-
puter. The commands will differ depending on
whether the cord has been connected to controller 1
or controller 2.
Connection with an MSX personal com-
puter of another make
Connect to the joystick connector when connecting
the tablet to an MSX personal computer made by
another company.
For details, refer to the Operating Instructions of the
personal computer in question,
PIONEER’S persor^al computer IPX-7)
4

PANEL FACILITIES
OPERATION
1. Ready the paper.
Ready asheet of AS size plain paper (with a
thicki^ess of about 0.1 mm).
2. Push down on the clamp and insert the paper.
3. Proceed to use the touch pen for input.
When apoint on the panel is pushed with the pen-
tip. its coordinates are input from the tablet to the
personal computer. When the pen is moved while it
is pressed down on the panel, the coordinates of
the respective points will be continuously input as
long as the pen is moved.
•Pressing down on the panel at two points
simultaneously will prevent the coordinates from
being input properly. Always press down at one
point at atime.
•The coordinates being input will become imprecise
if the pen tip is moved too rapidly.
NOTE:
•Even when astraight tine is drawn on the panel, there
may be gaps in the line which is displayed on the monitor
or TV screen. This is due to the fact that the lowest order
bits of the coordinate data are changed by an error in the
analog-to-digital conversion of the pa/tel input. It does
not indicate that anythirtg is wrong with the tablet.
•If the cabinet casing is subjected ro astrong pressure, the
panel may be pushed down around the edges of the cas-
ing which will interfere with proper input.
•If the panel surface is held while sorrtething is drawn or
written on the panel, more than one point will be Input.
This means that the proper coordinate data wdl not be irt-
put. Always use the pen-tip for input.

SPECIFICATIONS
Effective panel dimensions Xaxis: 205 mm
Yaxis: 140 mm
Resolution 8 bits Xaxis: 0.7 mm (typical value)
Yaxis: 0.54 mm (typical value)
0-255 (00— FF in hexadecimal format) are output
as the coordinate data for both the Xand Yaxes.
A/0 conversion error ± 2 LSB (maximum)
Dimensions 296(W1 x18(H) x210(DI mm
Weight 720 9
Power requirements DC 5Vi5%
Load current: 50 mA or less
Operating conditions Operating temperature:
0°C to +40«C
Storage temperature: -15°C to +60®C
Accessories
operating instructions ...2
After-sales servicirtg network 1
Touch pen 1
ROM cartridge 1
Overlay sheet 1
NOTE:
SpeciUcations and design subject to possible modi/kalians
without notice due to improvement.
TROUBLESHOOTING
Incorrect operations are often mistaken for trouble and malfunctions. If you think that there is something wrong
with your tablet, check out the points below. If the trouble cannot be rectified even after carrying out the checks
below, contact your nearest PIONEER authorized service center or your dealer,
@Has the connecting cord been disconnected?
®Has the program been input properly?
(D Have you used the touch pen properly?
0Has the personal computer been operated properly?
0Is the paper being used too thick? lit should be about 0.1 mm thick.)
©Has the ROM cartridge been inserted properly?
INTERFACE

0SENSE
This is the detection signei for panel input. When apanel input is present, alow-level signal is output in syn-
chronization with the select signal |C5).
@EOC
This signal indicates that the A/0 conversion of the panel Input has been completed. Ahigh-level signal is out-
put. A/0 conversion starts as soon as the select signal {^) is released and it is completed in about 160 sec.
The EOC signal is set low when the select signal is input, and it reverts to high when the select sigai is released
and A/0 conversion is completed.
0SO
When the select sigrral (CS) has been input, the 8-bit A/D converted data are output in sequence starting with
the most significant bit at the fall of the serial clock signal (SCR). When the select signal is high, the SO signal
Is kept in the high-level output state.
0SW
This signal Indicates the status of the tablet's switch or the status of the switch on the touch pen. The wgnal is
low when the switch is "on."
©DC5V
This is the input pin of the OC 5V power supply.
©SCK
The serial clock signal controls the shift operation of the serial input/output.
©SI
This serial Input signal specifies the Xand Ycoordinates entered from the panel. Alow signal is input when
reading the Xcoordinate and ahigh signal is input when reading the Ycoordinate.
When the select signal (C5) is input, the 51 input reads in the coordinates at the 7th and 8th rises of the serial
clock signal.
®«
This is the select signal. Alow signal is input with serial input/output. When it is high, the A/D conversion
mode is established and serial input/output Is inhibited.
®GND
This is the signal ground. It applies aground potential to all the signals.
All input and output operations are executed at the TTL level.
Input/output circuitry
Output
SENSE 74I.S or equivalent
SO
EOC