Our BCD displays provide a cost effective means to interpret and display BCD data in one of several available modes of operation. Like all Our products, you get a quality display in a rugged industrial enclosure, accompanied by expert technical support. With your choice of display color (standard red, optional green, yellow or tricolor in 4" discrete only) and digit sizes ranging from 3.3" to 12", Our Industries BCD/parallel input displays have the flexibility you require to serve your demanding industrial BCD display applications. Use our BCD displays Selection Guide to see which series of BCD displays is the right choice for your application.

BCD Displays Selection Guide

Series	87 Series BCD Displays	77 Series BCD Displays
Digit Heights	4" Solid Segment Digit 4" Discrete Digit 6" Discrete Digit 8" Discrete Digit 12" Discrete Digit	3.3" Discrete Digit
Viewing Distance (Recommended/ Maximum)	4" Solid Segment - 100' / 140' 4" Discrete - 120' / 160' 6" Discrete - 180' / 240' 8" Discrete - 240' / 320' 12" Discrete - 360' / 480'	3.3" Discrete - 100' / 120'
Number of Digits	2, 3, 4, 6, 8 or 12 digit	2, 3, 4, 5 or 6 digit
Display Color	Standard red, optional green, yellow or tricolor (Tricolor available for 4" discrete digit only)	Standard red, optional green or yellow
Display Technology	Discrete LED (Solid segment available in 4" size digit only)	Discrete LED
Data Formats	BCD, hexadecimal, binary, signed binary	BCD and hexadecimal
DIP Switch Selectable Modes of Operation	Parallel Mode Multiplexed Mode Pilot Light Round Robin (See 87/712 Modes of Operation)	Parallel Mode Multiplexed Mode (See 77/712 Modes of Operation)
Number of Data Inputs	16 data + 1 master strobe (parallel) or 4 data + 8 digit strobes (multiplexed)	24 data + 6 digit strobes + 1 master strobe
Input Voltage	3-30 VDC	Specify "H" (9-30 VDC) or "L" (3.5-9 VDC)
Selectable Sink and Source Operation	Yes (Selectable by wiring a return line to either a source voltage for sinking operation or to a common ground for sourcing operation)	Yes (Selectable by wiring a return line to either a source voltage for sinking operation or to a common ground for sourcing operation)
Communication Port	RS-232 and RS-422/RS-485	None
Programmable Operation	Yes (through DIP switch selection or PC using our FREE Display-Pro® 4 Windows® programming utility)	Yes (through DIP switch selection only)
Mounting Options	Hang Mount	Stand Alone or optional Panel Mount
Power Requirements	120/220 VAC ±15% 50/60Hz	Standard 120 VAC ±15% 50/60Hz or optional 24 VDC ±15%
Cost	See 87 Series Displays/Pricing 4" discrete 4 digit $613 4" discrete 6 digit $721	Starting at $463 for a 2 digit. (Add $30 for each additional digit.) 4 digit for only $523 6 digit for only $583

87 Series BCD Displays
The 87/232 Serial Display Platform with added 87/712 BCD Input Card option installed form the most powerful of our large BCD displays. Standard features include your choice of 4", 6", 8" and 12" tall digits in a 7-segment formation and features a set of 16 data inputs to load up to four digits of parallel BCD, eight digits of multiplexed BCD or 16 bits of binary data. Use DIP switches to select from 4 pre-programmed modes of operation. (See 87/712 Modes of Operation.)

87 Series BCD Displays

87/712 Modes of Operation
The 87/712 BCD Display operates in one of four standard DIP switch selectable modes of operation. DIP switches may also be used to select the active level for the data inputs as well as the active level for the strobe inputs. An input is said to be active when the voltage level for that input (high or low) agrees with the DIP switch selection (active high or low) or inactive when they don't agree. The modes of operation are defined as follows.

• Parallel Mode - 16 parallel inputs are used to enter BCD, HEX, or binary data (DIP switch selectable). This data is then converted to a digital display value. Data can be loaded and held using the master strobe input.
• Multiplexed Mode - One set of 4 parallel inputs is used to enter all BCD, HEX, or binary data (DIP switch selectable). When a digit strobe input (1 of 8) is activated, the data is routed to the appropriate digit as selected by the digit strobe input and converted to a digital display value. Only the selected digit is changed.
• Pilot Light Mode - A set of 16 discrete inputs are prioritized and given values 1 through 16, lowest to highest priority respectively. Optionally values can be re-defined by an offset value using our FREE Display-Pro® 4 Windows® programming utility. Anytime one or more of the inputs become active, the value of the active input with highest priority is displayed and at the same time, a relay output turns on.
• Round Robin Mode - A set of 16 discrete inputs are given values 1 through 16. Optionally values can be re-defined by an offset value using our FREE Display-Pro® 4 Windows® programming utility. Anytime one or more of the inputs become active, the values of all active inputs are displayed in sequence for a duration of 1 second each (up to 25 seconds using our FREE Display-Pro® 4 Windows® programming utility) and at the same time, a relay output turns on.

More Information on 87 Series Displays

77 Series BCD Displays
The 77 Series is the most economical of our large BCD displays. Standard units feature 3.3" tall digits in a 7-segment formation and include a set of inputs consisting of 24 data (6 digits with 4 data inputs per digit), 6 strobe and 1 master strobe. Choose between 2 factory set input voltage ranges 9-30 VDC or 3.5-9 VDC. Sink or source operation is user configurable by wiring a return line to either a source voltage for sinking operation or to a common ground for sourcing operation. An optional regulated output voltage of 5 or 12 VDC can be provided for auxiliary use.

77 Series BCD Displays

77/712 Modes of Operation
The 77/712 BCD Display operates in one of two standard DIP switch selectable modes of operation, parallel and multiplexed. DIP switches may also be used to select the active level for the data inputs as well as the active level for the strobe inputs. An input is said to be active when the voltage level for that input (high or low) agrees with the DIP switch selection (active high or low) or inactive when they don't agree. The modes of operation are defined as follows.

• Parallel Mode - BCD data is transferred in parallel fashion to the display when a strobe input is activated. Individual digits can be controlled independently by using the digit strobe inputs. Similarly, all digits can be strobed at once using the master strobe input.
• Multiplexed Mode - All BCD data share the same 4 data inputs. When a digit strobe input is activated, the BCD data present on the 4 data inputs is routed to the appropriate digit as selected by the digit strobe input.

More Information on 77 Series Displays