C SQEC Card Specifications





C.1 Performance Specifications

    Table C-1 Performance Specifications

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Feature Specification -------------------------------------------------------------------------------
                                             
SBus Clock                                   25 MHz max., 16.67 MHz min.
                                             
Max SBus Burst Transfer Rate                 29.6 (25 MHz), 19.7 (16.67 MHz)  
                                             Mbytes/sec1
                                             
Steady State SBus Transfer Rate              5 Mbytes/sec2
                                             
Max Ethernet Transfer Rate                   1.25 Mbytes/sec
                                             
SBus Data/Address Lines                      D (31:0)/PA (18:0)
                                             
SBus Modes                                   Master/Slave
                                             
Capacitance per SBus Signal Line             \xa320 pF
                                             
SBus Parity                                  Yes
                                             
SBus Version                                 Rev B.0
                                             
SBus Burst Sizes                             16/32/64
                                             
1 Assumes 64 Byte Burst and 0 SBus Latency   
                                             
2 4 Channels Running At Max Ethernet Speed   

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C.2 Power Specifications

    Table C-2 Power Specifications

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Specification Measurement -----------------------------------
                     
Power Dissipation    9.5 Watt max.
                     
Voltage Tolerance    +/- 5%
                     
Ripple               \xa3 100 mV
                     
Operational Current  5V, 2.0 Amps

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C.3 Physical Dimensions

    Table C-3 Physical Dimensions

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Dimension Measurement --------------------------------
           
Length     5.78 in. (146.70 mm)
           
Width      3.3 in. (83.82 mm)
           
Weight     4.3 oz. (125g)

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C.4 Environmental Specifications

    Table C-4 Environmental Specifications

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Condition Operating Specification Storage Specification -------------------------------------------------------------------------------------------------
                                                                  
Temperature                       0 to 70C (+32 to +131F)         -40 to 75C (-40 to +167F)
                                                                  
Relative Humidity                 5 to 85% non-condensing         0 to 95% non-condensing
                                                                  
                                  (40C, wet bulb temperature)     40C /hour
                                                                  
Altitude                          -1000 to +15,000 ft.            -1000 to +50,000 ft.
                                                                  
Shock                             5g, 1/2 sine wave, 11 msec      30g, 1/2 sine wave, 11 msec
                                                                  
Vibration, pk to pk displacement  0.005 in. max. (5 to 32 Hz)     0.1 in. max (5 to 17 Hz)
                                                                  
Vibration, peak acceleration      0.25g (5 to 500 Hz)             1.0g (5 to 500 Hz)
                                                                  
                                  (Sweep Rate = 1 octave/min.)    (Sweep Rate = 1 octave/min.)

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