Data Interface Connections; Initial Turn-On Procedure; Operator Checkout Procedures; Alternate Action Keys - Beehive International B150 Series Operator's Manual

to 1000 feet from the terminal over a 50-ohm coaxial
cable. A BNC connector is provided on the rear of
the terminal for this installation (see Figures 2-3A & B).
7.5 Data Interface Connections
Signals used in communicating with the B150Series
conform to the requirements of EIA Specification
RS232C. In particular, output voltage swings from
-10 volts to +10 volts, while the receivers present a
minimum of 3k ohms impedance to the line. The
receiver circuits employed in B 150 switch at ap-
proximately + 1.0 volt with 0.1 V of hysteresis.
The input resistance is approximately 4k ohms. The
driver circuits current limit is at 10 milliamps on
both source and sink.
All data source interconnections are made via the
rear panel Input/Output connector (refer to Figure
2-3). A 25 pin miniature D-type ITT Cannon con-
nector (DM-25S or equivalent) is used for connect-
ing to the computer. Pin assignments are listed in
Table 2-1 and defined in the following paragraphs.
2.8 INITIAL TURN-ON PROCEDURE
Read carefully Figures 3-1 and 3-2 before operating
the terminal.
The proper turn-on procedure for the terminal is as
.:illows:
a. Set the rear panel POWER ON/OFF switch to
ON; allow a warm-up period of approximately
one minute and ensure that the cursor has ap-
peared in the upper left hand corner of the
screen. If the cursor does not appear, check
that AC power is secure and go through the
the Brightness and Contrast adjustments, ex-
plained below.
c. Simultaneously depress the SHI FT and CLEAR'
HOME keys to clear the screen.
Perform the checkout procedures described in the
following paragraphs.
b.
Turn the BRIGHTNESS CONTROL (located on
the rear panel, see Figure 2-3) until a raster
is faintly visibie on the screen. Write sever-
al characters on the screen, using both high
and low intensities. {The keys ESC-[ and
ESC-] produce the different intensities.) Re-
duce the Brightness until the background raster
is extinguished. Adjust the Contrast CON-
TROL {located on the rear panel, see Figure 2-3)
until the characters are sharply defined and
the difference between the two intensities is
easily distinguished.
2-4
2.9 OPERATOR CHECKOUT PROCEDURES
To test the functional capabilities of the terminal,
perform the operator checkout procedures given in
the following paragraphs. Before proceeding, en-
sure that the screen is clear and the cursor is in the
Home position.
2.9.1 Alternate Action Keys
Perform the initial setup as follows:
a. Set the rear panel HDX/BLOCK/FDX switch to
HDX (see Figure 2-3 for Switch location).
b. Set the rear panel CUCURS232C switch to
RS232C
c. Depress the "a" key and enter a number of the
characters in memory and on the display.
Depress the SHIFT key and enter more char-
acters. Note that any letters entered are now
capitalized.
d. Depress the RETURN key and notice that the
cursor moves to the first location of that line.
e. Depress the LINE FEED key and note that the
cursor moves to the same column in the line
directly below its previous location.
f. Depress the HOME key and note that the cur-
sor returns to the Home position {the first
column on the first line).
g. Depress the LINE FEED key several times,
followed by several "a" keys. This should
move the cursor toward the center of the
screen.
h. Depress the SHI FT and CLEAR keys simulta-
neously. Note that the display completely
erases and the cursor returns to the Home
position.
2.9.2 Cursor Movement Checkout
Before performing the checkout, depress the CTRL
SHIFT, and CLEAR/HOME keys simultaneously to
initialize the terminal circuitry. Ensure that the
terminal is in a loopback mode (LOCAL. BLOCK
or HDX), the cursor is in the Home position, and
the display is blank. Perform the checkout as
follows:
a.
b.
c.
Depress and hold the CURSOR
[)()VvN
key un-
til the cursor reaches the bottom line of the
display. Once the cursor is on the bottom line
and the key is not released, the cursor should
remain on the bottom line. The display is
actually rolling up at this time.
Depress and hold the CURSOR RIGHT->-key
until the cursor reaches the last position on
the line. Release the key at this time.
Depress and hold the CURSOR UP
t
key until
the cursor is on the top line of the display. Re-