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Table 8–4. Dataproducts Interface Signals and Pin Assignments (Continued)
Output Signals
READY/PE
ONLINE
DATA REQUEST
(demand line)
GROUND
VERIFICATION
TEST
Interfaces
Output Signals
Description
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.
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.
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 DATA 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.
Connections for cable shield.
Jumper between two pins on the interface
connector enables verification that the
interface connector is seated correctly
Supplies +5V (at one Ampere) output for the
Printronix test exerciser. (Exerciser not needed
for L150.)
Amphenol
Winchester
Pin
Return
Pin
22
6
CC
21
5
y
23
7
E
39
M,f,
FF
46
x
45
y
12
HH
Return
EE
AA
C
8–7
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