Campbell Scientific DSP4 Heads Up Display - Manual (Page 9)

DSP4 HEADS UP DISPLAY
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becomes transparent; the remote operator sees
only the datalogger responses. The DSP4 does
however, show all the telecommunications on
the display. When the remote operator issues
the "E" command or allows the link to time out,
the DSP4 automatically re-establishes
communications with the datalogger and returns
to the COMMAND mode.
NOTE: In the Monitor mode of GraphTerm,
while trying to view location 12:, it will be
mislabeled and will display as location 11:.
The value will be correctly measured and
stored, but the label will be incorrect. There
will be two Location 11: labels.
NOTE: User flag 8 cannot be toggled from
the PC keyboard.
Printer data is aborted when a modem calls.
3.8.2 BAUD RATE AND DATA FORMAT
The baud rate is established with the DSP4 by
striking the Return key on the remote terminal
until the "*" prompt is received. Valid baud
rates in the MODEM mode are 300 and 1200
baud. Data must be serial, one start bit, 7 data
bits, no parity (8th bit is logic 0), and at least 1
stop bit.
3.8.3 ACCESSING THE DSP4 LABELS
CTRL L is used to enter labels. When CTRL is
pressed, the DSP4 echoes CTRL L<, signaling
it is ready for label editing commands. The
cursor is positioned before the first element of
the first label. Tab and CTRL D move the
cursor forward in memory. CTRL S moves the
cursor backward in memory. CTRL E and
Return move the cursor to the first position of
the next lower label. CTRL X moves the cursor
to the next higher label.
3.8.4 SAVING AND LOADING A PROGRAM
WITH LABELS
At any time while editing labels in the MODEM
mode, CTRL U causes the DSP4 to get the
program from the datalogger and combines it
with the DSP4 labels. The DSP4 then sends
the program and labels to the remote device in
the same format as it saves the program and
labels on tape. If this data is saved in a
computer file by the receiving system, the file is
suitable to reprogram the datalogger in the *D
MODE. If the file is sent to the datalogger via
the DSP4, the DSP4 extracts the labels from
the file and sends the program to the
datalogger. If the file is sent to the datalogger
directly, the datalogger ignores the label
information.
3.9 CONTROLLING DATA OUTPUT TO
PERIPHERALS (PRINTER MODE)
3.9.1 PRINTER BAUD RATES
Selecting the PRINTER mode produces the
following message:
PRINTER BAUD: OFF, 300, 1200, 9600B
The cursor is positioned under the "9600B", the
default setting for the printer. The CURSOR
key is used to move the display cursor to the
desired rate. A printer attached to the DSP4
peripheral port is enabled if either 300, 1200,
9600 baud is selected or conversely disabled if
the OFF function is selected. When 9600B is
selected, Final Storage data are sent to the
Storage Module in the efficient binary form.
When 9600B is selected, it is not necessary to
program the *4 Mode in the datalogger or to
insert Instruction P96 in a program to output the
Final Storage data to an SM192/SM716/CSM1.
The DSP4 takes precedence over the program
of the datalogger.
3.9.2 EFFECTS OF PRINTER ENABLED
With the printer enabled, datalogger Final
Storage data print in ASCII characters when the
DSP4 is in the RUN mode. When the DSP4 is
acting as a terminal in the telecommunications
mode, the datalogger responses are printed.
When the DSP4 is in the LABELS editing mode,
the labels edited print.
3.9.3 WAITING FOR PRINTER OR
ABORTING PRINTER DATA
If the LOAD, SAVE, PROGRAM, LABELS, or
EXIT mode is selected while the printer is
active, the DSP4 displays the message "WAIT
FOR PRINTER" while the DSP4 empties its
printer buffers. At 300 baud, the printer buffer
requires up to 5 minutes to empty. Printer data
can be aborted by pressing the SELECT key to
restore the command menu, then selecting the
PRINTER OFF function. Aborted printer data is
lost.