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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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