7188XA/B/C & 7521/2/2A/3/4/7 Series Hardware User’ s Manual, Ver. 3.0 Sep/2002, 7Mh-001-20 -----
37
COM3 for 7522/7522D/7523/7523D only
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RS-232 only
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RS-232: TXD,RXD,RTS,CTS,GND
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Communication speed: 115200 max.
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16 bytes FIFO
COM4 for 7523/7523D only
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RS-232 only
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RS-232: TXD,RXD,GND
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Communication speed: 115200 max.
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16 bytes FIFO
D/I
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3 channels for 7521/7521D/7522/7522D
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2 channels for 7523/7523D
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Logic low level: 0V ~ 1V
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Logic high level: 3.5V ~ 30V (for -25°C to +70°C)
3.5V ~ 25V (for -25°C to +75°C)
D/O
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3 channels, 150mA, 30V max. For 7521/7521D only
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1 channels, 150mA, 30V max. For 7522/7522D only
Display
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7-segmemt LED: 5-digit (for 7521D/7522D/7523D only)
Power
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Power requirements: 10 to 30VDC(non-regulated)
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Power consumption: 2.0W for 7521/7522/7523
3.0W for 7521D/7522D/7523D
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