CalComp Software Reference Manual
CalComp Software Reference Manual
CalComp Software Reference Manual
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Online Interfaces<br />
The Model 621 Remote Data Phone Receiver Plotter Controller<br />
is used with a 500 series plotter and various RJE terminals.<br />
The 621 offers remote plotting at a low cost with a widely<br />
used terminal.<br />
The Jl130B online interface is used with a 936 plotter and<br />
an IBM 1130 computer. The Jl130B/936 offers a higher speed<br />
and better resolution plotter than an IBM 1627 plotter.<br />
The RS-232/936, RS-232/960, and RS-232/836 online interfaces<br />
are used with the plotters and any computer system equipped<br />
with an EIA RS-232 interface connection with 9600 BAUD transmission.<br />
The RS-232 interfaces are asynchronous devices and<br />
receive 8-bit words, serially transmitted. The RS-232/936<br />
and RS-232/960 interfaces feature compact data transmission,<br />
and contain a buffer. These features provide full-speed plotting<br />
with low CPU interference.<br />
The 925 controller may also be connected online to computers.<br />
This allows all <strong>CalComp</strong> plotters to be attached online. The<br />
core memory of the 925 acts as a buffer and allows fast transmission<br />
of data along with complete checking of data.<br />
Other online interfaces supporting 565, 836, and 936 plotters<br />
are available from computer manufacturers.<br />
PLOTTER PERIPHERALS<br />
Items which complement the plotter line include film processors<br />
and duplicators. These items do not require software<br />
support. Items such as digitizers and COM printers do require<br />
software support.<br />
Model 942 Digitizer<br />
The 942 digitizer is a high precision coordinate measuring<br />
device that converts graphical data into digital form suitable<br />
for computer applications. This unit consists of a 42 x<br />
60-inch/work surface (pedestal base) with an interface to<br />
either a teletype or keypunch. The work surface is comparable<br />
to a standard drafting table with adjustments for surface<br />
tilt and elevation. The cursor is a free moving type with a<br />
two-inch diameter glass window containing a precision crosshair<br />
reticle. Five buttons on the cursor, control all digitizing<br />
functions. A digital display mounts to the top edge<br />
of the table and displays X-Y coordinates together with a<br />
sequence number. Figure 2-5 shows the 942 digitizer.<br />
2.18
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