Printronix MVP Series Printer User Manual


 
Interfaces826
Switching Interfaces
As previously mentioned, switching from one interface to the other requires a
simple change of the printers input/output (I/O) cable, terminating resistors,
and Configuration Option 66 (refer to Switching Interfaces in this chapter).
Interface Cables
The Centronics or Dataproducts interface cable must not exceed 40 feet in
length and must allow the transmission of signals having standard TTL logic
levels (0.0V to +0.5 low and +2.4V to +5.25V high). For minimum electrical
noise, use shielded cable and ground the shield.
Terminating Resistors
The Centronics parallel interface requires that 1000ohm resistor packs be
installed at Parallel Controller PCBA coordinates 15 C and 18C as shown in
Figure 85. Typical circuits using the resistors are shown in Figure 86.
The Dataproducts interface requires the 220ohm resistor pack at coordinates
18C and a 330ohm pack at coordinates 17C. A 1000ohm pack is installed
at location 15C.