BEEHIVE B100 (01) PDF Document

The BEEHIVE B100 is a low-cost, multi-feature remote video display terminal. Its key features include:

Controls and Display:

– Cursor Control with Addressable Cursor

– Erase Mode

– Non-Glare Screen

– 12-inch CRT displaying 12 lines of 80 characters (960 total), with a 24×80 option (1,920 total)

– Standard 64-character set, with an optional 96-character set for upper and lower case

Communication and Interfacing:

– Switch Selectable Transmission Rates from 75 to 19,200 bps

– Communication Modes: Half-duplex (HDX) and Full-duplex (FDX)

– RS-232C and current loop interfaces

– Auxiliary Interface for a printer or storage media I/O

Keyboard:

– Operator-designed keyboard with N-Key rollover

– Auto-repeat feature for keys held longer than half a second

– Eleven-key numeric pad for easy number entry

– Cursor up, down, right, and left controls

Expansion Options:

– Formatting

– Hard copy capability with a printer interface

– Editing and blink features

– 16 function keys

The specifications for the BEEHIVE B100 terminal are as follows:

PHYSICAL CHARACTERISTICS

POWER REQUIREMENTS

ENVIRONMENTAL SPECIFICATIONS

The general and communication specifications for the BEEHIVE B100 are as follows:

The following options are available for the BEEHIVE B100 terminal:

CHARACTER GENERATOR

1. 96 Displayable Character Set

DISPLAY MEMORY

1. 24 Line x 80 characters

EDIT

1. Edit/Function Keys

MONITOR/FREQUENCY/VOLTAGE

1. 115V 50/60 Hz

2. 100V 50/60 Hz

3. 200V 50/60 Hz

4. 230V 50/60 Hz

Follow these steps for unpacking and inspecting your BEEHIVE B100:

2.2 UNPACKING

The following items are furnished with each B100 terminal:

a. The display terminal with keyboard.

b. Power Cord.

c. Operator’s Manual

There are no tiedowns or packing materials inside the unit which need to be removed. It is recommended to store the carton for use as a future shipping container.

2.3 INSPECTION FOR IN-SHIPMENT DAMAGE

Upon receipt, carefully check all components for any signs of shipping damage. The shipping containers are specially designed to protect their contents. If damage is found after visual inspection, take care not to destroy the evidence. If necessary, document the damage with photographs and contact the transport carrier as soon as possible.

Placement for Operation

Select a convenient, level surface for the terminal. Position it so that operator use is convenient and the power and data I/O cables will not be in the way. Route cables so they are not inadvertently pulled or disturbed.

CAUTION: Do not place the terminal on any surface that will block cooling air from the bottom or back of the cabinet. The terminal has an internal fan for cooling. Air enters through slots in the bottom and exits through slots in the rear. To maintain efficient air circulation, keep at least two inches of clearance at the rear and on the sides of the terminal.

Power Connection

The terminal is shipped with a three-conductor power cord that grounds the instrument through the offset pin. This safety feature should always be preserved by grounding the terminal to the outlet box or another earth ground. If you must use an adapter, ground the pigtail.

Data Interface Connection

All data source interconnections are made via the rear panel Input/Output (I/O) connector. This is a 25-pin miniature D-type connector used for connecting to the computer. The signals conform to EIA specification RS-232C.

The pin assignments for the BEEHIVE B100 data interface ports are as follows:

DATA INTERFACE PIN ASSIGNMENTS (Main I/O Port)

*(Not RS-232C, TTL Level). NOTE: CL is bipolar.

AUXILIARY PORT PIN ASSIGNMENTS

The rear panel of the BEEHIVE B100 contains the following controls and ports:

• POWER ON/OFF SWITCH: Controls power to the terminal.
• CIRCUIT BREAKER: Prevents damage to circuitry during voltage/current overload.
• AC POWER: Connection for the power cord.
• COMPOSITE VIDEO CONNECTOR: Provides an interface for a remote monitor, which can be located up to 1000 feet away and operates through a 50 ohm coaxial cable.
• BRIGHTNESS: Provides adjustment for the over-all brightness of the video display.
• CONTRAST: Provides adjustment for the contrast level of the video display.
• COOLING FAN: Circulates air to cool internal components.
• BAUD RATE SWITCH: This rotary switch selects the baud rate the transmitter and receiver will use for transmission. There are 15 internal and 1 external baud rate selections.
• HDX/BLOCK/FDX SWITCH: Selects half-duplex, block mode, or full-duplex operation.
  – HDX: Data from the keyboard is displayed, stored in memory, and transmitted out the I/O port.
  – FDX: Data is routed to the I/O port and not displayed or stored.
  – BLOCK: Data is only stored and displayed until the SEND or AUX SEND keys are depressed.
• CL/LCL/RS 232C SWITCH:
  – CL: Input/output data is routed to the current loop transmitter and receiver only. RS 232C elements are inactive.
  – RS 232C: Disables the current loop elements and routes data through the RS 232C elements.
  – LCL (Local): Inhibits any transmission.
• MAIN PORT: This port provides the primary data source interface for the terminal, using either RS 232C or current loop.
• AUXILIARY PORT: This connector provides an interface for peripheral devices such as disks, printers, tape drives, etc.

BAUD RATE SWITCH POSITIONS

The BEEHIVE B100 has several internal DIP switches for configuration. Set them according to your requirements using the tables below. A switch is in the “CLOSED” position when it is pushed towards the (+) indicator.

SWITCH LOCATION A1

SWITCH LOCATION D10 (Main Port)

SWITCH LOCATION D11 (Auxiliary Port)

SWITCH LOCATIONS E13 & E14 (Baud Rate)
NOTE: Only one switch should be closed across both E13 and E14 locations.

The keyboard on the BEEHIVE B100 generates character codes, control codes, or escape sequences based on the keys depressed.

• To perform an Escape Operation: Depress and release the ESC key, followed by the designated alpha/numeric key.
• To perform a Control Function: Depress the CTRL key and hold it down while simultaneously typing the alpha/numeric key.
• To type upper case characters (if lower case option is installed): Use the SHIFT key, which functions like a typewriter shift key.

Control Codes generated by a single function key (e.g., cursor movement) produce a single 8-bit code that is acted upon by the terminal but not transmitted. Escape or Control sequences (e.g., CTRL-Q) produce two 7-bit codes that are both acted upon and transmitted.

The proper turn-on procedure for the BEEHIVE B100 terminal is as follows:

a. Set the rear panel POWER ON/OFF switch to ON; allow a warm-up period of approximately one minute.

b. Turn the BRIGHTNESS CONTROL on the rear panel until a raster is faintly visible on the screen. Type several characters. Reduce the Brightness until the background raster is extinguished. Adjust the CONTRAST CONTROL until the characters are sharply defined.

c. Simultaneously depress the SHIFT and CLEAR/HOME keys to clear the screen and ensure the cursor appears in the upper left corner.

• ALPHABETIC and NUMERIC KEYS: Generate all displayable character codes corresponding to the letters, symbols, or numbers.
• ESC (Escape): Generates the ASCII escape code, used as the initial code of an escape sequence.
• CTRL (Control): When depressed simultaneously with an alpha key, it forces bits 6 and 7 to 0, allowing for the generation of control codes.
• SHIFT: A momentary key that enables upper case alpha and special characters to be entered.
• RETURN: Causes the cursor to go to the first column of the same line.
• LINE FEED: Causes the cursor to move down one line in the same column. It has the same action as the CURSOR DOWN key or pressing CTRL-J.
• DEL (Delete): Generates a non-displayable delete code when shifted. In lower case, it produces an underscore (_).
• FUNCTION keys (F1-F16): Special keys that produce a code sequence to the I/O Port. The sequence begins with an STX, followed by an ESC-alphanumeric key, and ends with an ETX.

• NUMERIC PAD (0-9): An 11-key pad for convenient entry of numerical data. These keys are not affected by the SHIFT key.
• CURSOR KEYS (Up, Down, Left, Right):

  – UP: Moves cursor to the same column on the line above. Wraps from the first line to the last.

  – DOWN: Moves cursor to the same column on the line below. On the last line, it causes the display to scroll (unless in FORMAT MODE). Wraps from the last line to the first in FORMAT MODE.

  – RIGHT: Moves cursor one location to the right. Wraps to the first position of the next line. On the last character of the screen, it scrolls (unless in FORMAT MODE, where it returns Home).

  – LEFT: Moves cursor one location to the left. Wraps to the last position of the line above. From the Home position, it wraps to the last position of the last line.

• EOS (End of Screen): Causes data to be cleared from the cursor position to the end of the screen.
• EOL (End of Line): Causes data to be cleared from the cursor position to the end of the line.
• CLEAR/HOME:

  – Unshifted: The cursor moves to the Home position (top-left).

  – Shifted: Activates a “clear screen” operation. In FORMAT MODE, only unprotected data is erased.

• BREAK: Generates a pulse of approximately 450 milliseconds which places the transmit data line in the spacing state.
• SEND:

  – Unshifted: Initiates a page-type block send out the Main I/O Port.

  – Shifted: Initiates a line-type block send.

• AUX SEND: Initiates a page-type block send out the Auxiliary Port.
• FMT TAB (Format Tab): In FORMAT MODE, moves the cursor to the first position of the next unprotected field. If not in FORMAT MODE, it moves the cursor to the Home position.
• DEL CHAR (Delete Character): Deletes the character under the cursor and shifts all data to the right of the cursor (within the line or unprotected field) one position to the left.
• INST CHAR (Insert Character): An alternate action key. When active, any character typed is inserted at the cursor position, and all characters to the right are shifted one position right. The last character is lost.
• ALPHA LOCK: An alternate action key that locks the terminal in an upper case mode, making it teletype code compatible.
• AUX ON LN (Auxiliary On Line): An alternate action key that connects the Main I/O Port with the Auxiliary Port, allowing for daisy-chain operation. An LED indicator is on when active.
• AUX ENBL (Auxiliary Enable): An alternate action key that enables conversational mode transmission out the Auxiliary Port only, disabling the Main I/O Port.

FORMAT MODE allows you to create screens with protected and unprotected fields. The operator can only enter data into the unprotected fields, which are identified by higher intensity characters.

• To start an Unprotected Field: Use the keys ESC-[.
• To end an Unprotected Field and start a Protected Field: Use the keys ESC-]. All data entered after this sequence is protected.
• To place the terminal in FORMAT MODE: Use the keys ESC-W. This allows the terminal to recognize the protected areas.
• To take the terminal out of FORMAT MODE: Use the keys ESC-X. The low intensity areas will no longer be protected.

The following ESC key sequences provide special functions on the BEEHIVE B100:

• ESC-I: Data entered following this sequence will be placed in a blink field.
• ESC-m: Terminates the entry of data into a blink field.
• ESC-b: Causes the keyboard to be enabled, allowing data entry.
• ESC-c: Causes the keyboard to be disabled, preventing data entry. WARNING: Only the computer can remove the disabled state after the keyboard is locked unless the power to the terminal is turned off.
• ESC-F: Followed by two characters representing line and column coordinates, this sequence sends the cursor to a specific location on the screen. (See Cursor Address Codes table).
• ESC-0: Produces a page-type block send out the Auxiliary Port.

To test the functional capabilities of your BEEHIVE B100, perform the following checkout procedures. First, ensure the screen is clear and the cursor is in the Home position.

Alternate Action Keys Checkout

a. Set the rear panel HDX/BLOCK/FDX switch to HDX.

b. Set the rear panel CL/LCL/RS-232C switch to RS-232C.

c. Depress the ‘a’ key and enter a number of characters. Depress the SHIFT key and enter more characters. Note that letters entered are now capitalized.

d. Depress the RETURN key and notice 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 cursor returns to the Home position.

g. Depress the LINE FEED key several times followed by several ‘a’ keys to move the cursor toward the center. Depress the FORMAT TAB key and note that the cursor again moves to the Home position.

h. Depress the SHIFT and CLEAR keys simultaneously. The display should completely erase and the cursor should return to the Home position.

Cursor Movement Checkout

a. Depress and hold the CURSOR DOWN key until the cursor reaches the bottom line. The display will scroll up. The cursor should remain on the bottom line.

b. Depress and hold the CURSOR RIGHT key until the cursor reaches the last position on the line. Release the key.

c. Depress and hold the CURSOR UP key until the cursor is on the top line. Release the key.

d. Depress and hold the CURSOR RIGHT key. When the cursor reaches the end of a line, it will wrap around to the first position of the next line.

e. Depress and hold the CURSOR LEFT key to cause the cursor to wrap around to the next position of the line above.

f. Depress the HOME/CLEAR key to move the cursor to the first position of the first line.

SEND and AUX SEND Checkout

a. Initialize the display by pressing CTRL, SHIFT, and CLEAR/HOME simultaneously.

b. Type a test message consisting of several lines of data.

c. Move the rear Baud Rate Selection switch to a slow baud rate.

d. Leave the cursor at the end of the data.

e. Depress the SEND key. The cursor should automatically move to Home and then move slowly across the screen, character by character, line by line, as the data is “transmitted”. This is a PAGE SEND.

f. Depress the SHIFT and SEND keys simultaneously. The cursor should move to the first position of the current line and move slowly across that line only. This is a LINE SEND.

g. Depress the AUX SEND key. This operation looks like a PAGE SEND, but the data is transmitted out the AUX PORT instead of the MAIN I/O PORT.

Follow these steps to check the FORMAT MODE functionality:

a. Initialize the display by pressing CTRL, SHIFT, and CLEAR/HOME simultaneously.

b. Establish a screen format by completing the following sequence:

1. Key in the characters for the first unprotected field.

2. Enter ESC-] to start a protected field.

3. Key in the characters for the first protected field.

4. Enter ESC-[ to end the protected field.

5. Repeat steps 1 through 4 for each desired location.

c. Send an ESC-W sequence to put the display in FORMAT MODE. The protected areas will be low intensity. The cursor should have moved to the first unprotected location.

d. Depress the CURSOR RIGHT key. The cursor should move right and jump over all protected (low intensity) areas.

e. Simultaneously depress the SHIFT and CLEAR/HOME keys. All data in the unprotected areas (high intensity) should be erased, leaving only the protected fields.

f. Depress the FORMAT TAB key once. The cursor should move to the first position of the next unprotected field. Repeated depressions will move the cursor from field to field.

g. Initialize the display again by pressing CTRL, SHIFT, and CLEAR/HOME keys.

You can address the cursor to a specific location by sending a four-code sequence: ESC-F, Line, Character.

For example, to position the cursor to line 15, character position 41, you would send the ASCII codes for ESC, F, ‘.’, and ‘H’.

NOTE: Illegal addresses placing the cursor beyond the 80th character will cause the cursor to disappear. Recover the cursor by depressing the HOME or SHIFT/CLEAR keys.

The following table gives the ASCII characters required to address any line or character position on the display.

CURSOR ADDRESS CODES (LINE FIRST)

The following table shows the ASCII codes used by the BEEHIVE B100, including control characters, displayable characters, and escape sequences.

A Full-Duplex Echoplex test allows you to test the terminal independent of an external data device. To perform the test, you need a specially wired 25-pin male connector that mates with the Main I/O Port. This connector must have a jumper wire between Pin 2 (Transmitted Data) and Pin 3 (Received Data).

Set-up for the test is as follows:

1. Set the terminal to FDX (Full Duplex Mode) using the rear panel switch.

2. Set the Baud Rate to any setting.

3. Install the test connector in the Main I/O Port.

To perform the test:

Enter data from the keyboard as you would if you were on-line to a computer. If the data you type is displayed correctly on the screen, then the BEEHIVE B100 is transmitting and receiving data properly.

If there is no raster on your BEEHIVE B100 screen, first check for power issues:

1. Is the terminal plugged into a proper power source? If not, plug it in.

2. Is the power switch on the rear panel in the ON position? If not, turn it on.

3. Is the circuit breaker on the back panel tripped? If so, depress it to reset it.

4. Check that all internal transformer wire harnesses are connected.

If power seems to be fine, check the display and keyboard connections:

5. Is the keyboard plugged in? If not, plug it in.

6. Is the brightness control on the rear of the unit adjusted correctly? Try adjusting it.

7. Is the monitor plugged into the logic card? If not, plug it in.

If the problem persists, internal components may require service. The problem could be with the logic card, wiring harness, or the monitor itself.

If your BEEHIVE B100 is experiencing issues like an absent cursor, multiple cursors, a cursor not in the home position, or a screen filled with video blocks, follow these troubleshooting steps:

1. Refer to the initial turn-on procedure. Properly adjust the Contrast and Brightness controls on the rear panel.

2. If adjustments do not solve the issue, check if the video information is correct. If it is not, the logic card may need to be replaced.

3. If the video information appears correct but the display is still faulty, the monitor may need to be replaced.

If no character is displayed when typed and the cursor does not advance:

1. Check if the keyboard is plugged in. If not, plug it in.

2. Verify the keyboard printed circuit board is plugged into the main keyboard assembly.

3. If the problem persists, the issue may be with the logic card, the keyboard harness, or the keyboard assembly itself, which may require replacement.

If your BEEHIVE B100 displays the wrong characters or if control and escape functions are not working correctly in off-line mode, follow this procedure:

1. Refer to the ASCII Code Chart in the manual to verify the proper codes for the keys you are pressing.

2. Check if the ASCII code lines on the logic board are correct. If they are correct, proceed to the next step. If they are not, the logic card may need to be replaced.

3. Check if the ASCII code is correct on the keyboard output pins. If it is not, the keyboard may need to be replaced.

4. If the code is correct at the keyboard output but not on the logic board, the keyboard cable may be faulty and require replacement.

First, verify proper operation of the terminal in Local mode before troubleshooting on-line issues.

If no data is being transmitted:

1. Ensure the I/O cable is plugged into the I/O port on the back panel.

2. Check that the EIA/LOCAL/CL switch is set to a position other than LOCAL.

3. Verify the duplex setting (HDX/FDX) is compatible with the external device.

4. Ensure the baud rate setting on the terminal matches the external device.

5. If the problem persists, suspect the external device or the terminal’s logic card.

If the terminal transmits invalid data:

1. Perform the Full-Duplex Echo Loop test to verify the terminal’s operation.

2. Ensure the baud rate is consistent with the external device.

3. Check that the parity bit is set correctly per the internal switch list.

4. If these checks pass, suspect the external device.

If there is no reception:

1. Verify the I/O cable is connected and the terminal is in an on-line position.

2. Ensure the baud rate matches the external device.

3. If the problem continues, the issue may be with the external device or the terminal’s logic card.

If the terminal receives invalid data and/or improper parity:

1. Verify proper character display in local mode.

2. Ensure the baud rate setting on the terminal matches the external device.

3. Confirm that the duplex setting (HDX/FDX) is consistent between the terminal and the external device.

4. If the issue remains, suspect the external device or the terminal’s logic card.

WARNING: The Monitor employs high voltages. Care should be used in making any adjustments as power will be applied to the Monitor. Some adjustments require the terminal case to be removed.

1. Brightness & Contrast: These controls are on the back panel. First, position them to a point where the white raster on the CRT is extinguished. Fill the screen with characters from the keyboard and adjust the contrast control for the sharpest display in the upper left corner of the screen.

2. Vertical Frequency (Rolling Display): If the display is rolling, adjust the vertical frequency control (R 116) on the monitor PC board. This adjustment should be made by visual observation to achieve a steady display.

3. Vertical Height: Fill the screen with characters. Adjust the vertical height control (R 124) so there are 6.5 inches from the top of the characters on the first row to the bottom of the characters on the last row in the center of the display.

4. Vertical Linearity: Adjust the vertical linearity control (R 121) so the characters on the first row are equally as tall as the characters on the last row. Their height should be approximately 0.18 inches (46 mm).

5. Horizontal Width: Fill the screen with characters and adjust the horizontal width coil (L101) for 8.5 inches (21.6 cm) from the left margin to the right margin of the display characters.

6. Horizontal Linearity: To correct for compression on the left side of the display, loosen the clamp securing the yoke and slide the cardboard sleeve in or out to give uniform width to the characters.

7. Focus: Adjust the focus control (R 107) for the best overall display focus. You may need to readjust the contrast control and repeat this step.

8. Centering and Tilt: Centering is accomplished by rotating the small permanent magnets glued behind the deflection yoke. If the display is tilted, correct it by rotating the entire yoke.

Follow these procedures to disassemble the BEEHIVE B100. Assemble in reverse order.

Case Removal

The reinforced fiber case is fastened to the chassis with six screws and lock washers. Two are on the front of the case below the keyboard, and four are in the back surrounding the rear panel. Lift the case straight up for removal.

Logic Board Removal

1. Place the terminal upside down on a soft surface.

2. Remove the five (5) screws and lock washers that secure the Bottom Plate to the chassis. The Logic Board is attached to this plate.

3. CAUTION: Do not remove the screws holding the keyboard.

4. Carefully lift the Bottom Plate/Logic Board and note the three wiring harness attachment points: one for the keyboard at the front, and two for the power supply/monitor at the left rear.

5. Carefully remove the keyboard strap. Lift the front of the board to access the other plugs.

6. The rear plugs have a plastic spring clip connector that must be compressed before removal. Pull the board forward to clear the switches and plugs from their holes in the rear of the chassis, and then the board can be removed.

Keyboard Assembly Removal

1. Remove the case as described above.

2. From the underneath side of the chassis, remove the seven (7) screws and lock washers on the keyboard end.

3. Move the keyboard away from the monitor slightly and unplug the wire strap from the logic board to the keyboard. Remove the keyboard.

Fan Removal

1. Remove the case.

2. Remove the four mounting screws at the back of the terminal.

3. Unhook the power cord and remove the fan.

Monitor Assembly Removal

1. Remove the bottom plate/logic board and the case first.

2. Three screws and lock washers hold the Monitor Assembly to the chassis. Remove these screws from the underside of the chassis.

3. The complete Monitor Assembly can then be removed.