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Interfaces 8–7
Table 8–4. Dataproducts Interface Signals and Pin Assignments (Continued)
Output Signals
Amphenol Winchester
Output Signals Description Pin Return Pin Return
READY/PE A high active level from the printer to indicate:
1. AC power and DC voltages present.
2. Printer paper loaded properly.
3. Printer is not in a CHK condition.
22 6 CC EE
ONLINE High active level from the printer to indicate:
1. The READY line is true.
2. RDY switch on the operator control panel
has been activated.
21 5 y AA
DATA REQUEST
(demand line)
High active level from the printer to
synchronize host computer data transmission
with printer timing. High level indicates printer
data request. The signal remains high for as
much as 250 ns after DA
T
A STROBE signal is
received then the DATA REQUEST drops to
low (false) and remains low until the data is
stored in the printer’s buffer.
23
7 E C
GROUND
Connections for cable shield.
39 M,f,
FF
VERIFICATION Jumper between two pins on the interface
connector enables verification that the
interface connector is seated correctly
46
45
x
y
TEST Supplies +5V (at one Ampere) output for the
Printronix
test exerciser
. (Exerciser not needed
for L150.)
12 HH