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Message flexibility is the theme of Babcock's SP-300 stackable displays. The number of characters per display range from one and one-half to four. As a result , a field can be created to meet nearly any application, including: computer peripherals, automotive, appliance, point-of-sale, and instrumentation.
Babcock's SP-300 Series is recognized by Underwriters Laboratory, Inc., file #E49139.
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0.55 Inch (13,37mm) Character Height (SP-350 Series) |
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0.33 Inch (8,38mm) Charact Height (SP-330 Series) |
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210 fL Brightness at Nominal Current |
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40 ft. (12,2m) Viewing Distance (SP-350 Series) |
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20 ft. (6,1m) Viewing Distance (SP-330 Series) |
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DC Characteristics
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SP-330 Family
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SP-350 Family
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MIN
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TYP
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MAX
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MIN
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TYP
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MAX
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Display Supply Voltage1
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160 Vdc
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180 Vdc
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Note 2
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160 Vdc
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180 Vdc
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Note 2
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Anode-to-Anode Differential
Voltage10
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---
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---
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14 Vdc
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14 Vdc
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Anode-to-Cathode Voltage
Drop (Typical Current)
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135 Vdc
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135 Vdc
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Cathode Current - Typical
Segment (Seg. "b") 3 4
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70 µA
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180 µA
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250 µA
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130 µA
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330 µA
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420 µA
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Cathode Current - Decimal
Point4
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60 µA
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135 µA
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190 µA
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65 µA
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135 µA
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190 µA
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Cathode Current- Plus Sign4
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110 µA
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290 µA
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400 µA
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260 µA
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585 µA
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820 µA
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Cathode Current-Minus Sign4
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50 µA
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135 µA
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185 µA
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120 µA
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270 µA
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380 µA
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Cathode Current –Keep-Alive
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10 µA
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50 µA
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10 µA
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50 µA
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Power Dissipation (with all segments lighted & assuming typical Segment current)
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175 mW
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325 mW
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Operating Temperature
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0°C
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70°C
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0°C
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70°C
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Storage Temperature
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-55°C
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125°C
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-55°C
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125°C
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Multiplex Characteristics
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SP-330 Family
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SP-350 Family
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MIN
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TYP
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MAX
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MIN
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TYP
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MAX
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Display Supply Voltage
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160 Vdc
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180 Vdc
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Note 2
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160 Vdc
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180 Vdc
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Note 2
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Anode Voltage Swing
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30 Vdc
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45 Vdc
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90 Vdc
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30 Vdc
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45 Vdc
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90 Vdc
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Anode On Time6 7 11
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80 µsec
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200 µsec
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----
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80 µsec
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200 µsec
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Interdigit Blanking Time12 13
SP-358
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40 µsec
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55 µsec
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40 µsec
50µsec
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55µsec
100µsec
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Refresh Period
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----
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Note 6
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----
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Note 6
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Cathode Voltage Swing8 9
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30 Vdc
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50 Vdc
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120 Vdc
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30 Vdc
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50 Vdc
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120 Vdc
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Cathode Bias Voltage (ON
Anode to OFF Cathode
Voltage)9
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90 Vdc
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110 Vdc
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120 Vdc
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90 Vdc
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110 Vdc
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120 Vdc
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Notes
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1.
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Recommended minimum supply voltage for initial ionization is 160 volts dc. After the display has ionized, the voltage drop is approximately 135 volts at typical cathode current.
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2.
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Display supply voltage (including ripple) should not exceed 200 Vdc when display is used with DD-700 decoder/drivers. Higher display supply voltages are acceptable when the breakdown of the driving device exceeds 80 Vdc.
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3.
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Segment currents as a proportion of b segment current:
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a, d, f, n, p, r, and numeric g current ratio
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1.00
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c current ratio
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1.25
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a current ratio
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1.15
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h, j, and k current ratio
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0.85
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m and alphanumeric g current ratio
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0.50
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4.
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The specified minimum current is required for even segment glow. Current values up to 1.5 times the typical specified may be used. Life expectancy, however, may be reduced by operation at excessively high currents. Segment currents for multiplexed (time shared) operation may safely be increased to four times typical with 0.25 or smaller duty cycle.
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5.
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To ensure uniform operation of both colon cathodes, each should have its own current limiting device (resistor or current sink).
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6.
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Keep-alive use is recommended for all multiplexed application. Three milliseconds is the maximum refresh period without keep-alive. Ten milliseconds is typical with keep-alive.
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7.
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No anode or cathode blanking is required for proper display performance. Some blanking, however, may be advantageous in eliminating time overlap of signals due to circuit characteristics.
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8.
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Cathode voltage swings of as little as 30 volts may be acceptable under specific conditions.
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9.
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The sum of cathode bias voltage and cathode voltage swing must be within recommended display supply voltage.
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10.
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Specified for lighted cathodes on all digits with Independent current limiting. For busted cathodes (multiplexed operation). 90 volts is permissible.
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11.
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Anode ON times assume typical keep-alive current and typical anode supply voltage.
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12.
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The specified blanking time assumes 990 µA for SP-350 series,520 µA for the SP-330 Series. Blanking requirements are strongly dependent upon the mode of multiplex operation, the segment current used, and upon the supply voltage used.
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13.
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Colons, decimals, pluses and minuses must have the same blanking as any other cathode and are only enabled during their respective digit times.
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* Items in bold and with an asterik (e.g. RST*) indicates negative true logic (typically denoted by an overbar).
For further information, contact your local Babcock Representative or the factory.
This document is designed to assist a purchaser to make an independent determination as to the suitability of these products for his application. Therefore, performance under any use conditions must be based upon the purchaser's independent conclusions, and no conclusion, representation or warranty is made or implied as to the suitability of any of these devices for a particular requirement or use, due to the wide variety of possible applications, and/or conditions beyond our control.
Specifications subject to change without notice.
SPECIAL HANDLING INSTRUCTIONS
MOS circuit components in this assembly are susceptible to damage from static electricity and high voltage transients. A shorting pad of conductive foam has been installed across the interface connector. The shorting pad should not be removed until the terminating connector is wired and ready to be connected to the assembly. The interface connector should always be terminated with either the shorting pad or the terminating connector. DO NOT TOUCH the interface connector with fingers or tools in the absence of the shorting pad or the terminating connector unless properly grounded. The data connector should not be connected or disconnected while power is applied to the unit.
LIMITED WARRANTY
All Babcock displays have a one year limited warranty. Disassembly of the product will void the warranty. Damaged displays should be returned to the factory for analysis. Contact the factory for further details.
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Specifications are for reference only.
9200-0006
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