Introducing
the
HP
2624A
Using
either
the
system function keys or escape sequences,
you
can
select
the
integral
printer
as
the
destination
device for
data
transfers.
Having
done so, you
can
then
perform any of
the
following types of
data
transfers
using
either
the
system function keys or escape sequences:
• Copy one line from
the
display
• Copy all lines visible
in
the
display
• Copy
all
data
from
the
current
cursor line
through
the
end of display memory
• Copy
all
of display memory
• Copy
data
directly from a
host
computer
In
addition,
the
integral
printer
offers both
report
mode
and
metric
mode. When
report
mode
is
enabled,
the
in-
tegral
printer
output
is
formatted as a series of 8
112"
X
II"
pages
with
a top
and
bottom
margin
and
a tic
mark
bet-
ween successive pages. Metric mode produces
similar
out-
put
except
that
the
pages
are
longer
(report
mode
generates 60 lines of
text
per
page while
metric
mode
generates 64 lines of
text
per
page).
You
can
also enable
data
logging to occur from
either
the
top or bottom of display memory. With. top logging,
any
data
that
is forced off
the
top
of
display memory
is
directed
to
the
integral
printer
and/or
an
external
printer, which-
ever is currently selected
as
a "to" device. With bottom
logging,
any
data
added
to
display memory,
either
from
the
keyboard or from a
data
commport,
is also directed to
the
printer(s).
DATA
COMMUNICATIONS
The
HP
2624A
has
two
data
communications ports
that
may
both
be
active
simultaneously.
One
is
used
for
establishing a
data
link
with
a host computer
and
the
other
is used for connecting
the
terminal
to
an
external
printer.
The two ports are configured separately. The
terminal
can
operate
at
speeds
ranging
from 110 to 9600 baud
and
offers
the
following asynchronous transmission modes:
Full
Duplex Hardwired
Full
Duplex MODEM
Half
Duplex
Main
Channel
Half
Duplex Reverse Channel
The terminal's electrical interface adheres to EIA RS-232C
and
CCITT
Y.24
communications interface specifications.
'fransmission can be performed
in
character mode, block
line mode, or block page mode;
in
all cases
the
data
may
be
either
formatted (a
data
entry
form
with
unprotected,
1-6
protected,
and
transmit-only
fields)
or
unformatted.
Formatted
data
may
be compressed
using
modify
data
(
tags.
Using
the
configuration
process, you
may
enable
the
following forms of VRC
parity
generation
and
checking:
None (no
parity
bit)
Odd
Even
Ones (8th
bit
forced to
1)
Zeros (8th
bit
forced
to
0)
SELF-TEST
The
HP
2624A is engineered for
high
reliability, ease of
testing,
and
rapid
repair.
When
the
terminal's power is
first
turned
on,
the
power-on
self-test automatically verifies
the
integrity
of all ROM
(Read-Only Memory)
and
RAM (Random Access Memory)
chips
within
the
terminal.
It
also does a CRC verification of
the
configuration
data
stored
in
non-volatile memory.
Using
the
system function keys you
may
also
initiate
any
of
the
following self-tests:
1.
Power-On Test. This is
the
same
test
that
is
performed
at
power-on.
2.
Data
Comm Test. This
test
verifies
the
integrity
of
either
data
communications port. Loop-back
via
a
test
hood
or
a modem
may
be performed.
(
3.
Terminal Test. This self-test does a CRC verification of
all
ROM
chips
within
the
terminal,
non-destructively
verifies
the
integrity
of
all RAM chips
within
the
ter-
minal,
and
then
displays a
test
pattern
on
the
screen.
The
test
pattern
includes
all
characters
(and segments
in
the
case of
the
line
drawing
set)
as
well
as
all
the
character
enhancements.
4.
Printer
Self-Test.
This
self-test
verifies
the
proper
operation of
the
integral
printer. A
test
pattern
contain-
ing
a
variety
of characters
in
standard,
compressed,
and
expanded format is printed.
5.
Identify ROMs. This self-test
generates
a
listing
(on
the
display screen) of all
installed
ROMs.
6.
Manufacturing Self-Test. This is a
test
that
is used by
HP
manufacturing
personnel
during
the
terminal
"burn-in" process.
It
is
actually
a
set
of
tests
that
are
run
in
a continuous loop. The set consists of
the
Data
Comm
Test,
the
Terminal Test,
the
Printer
Self-Test (if ap-
plicable),
and
some
additional
general
hardware
verification.
(
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