Number of channels
                                
                                
                                    16. Each channel can be configured for DI or SOE operation
                                
                             
                            
                                
                                    Time stamp accuracy
                                
                                
                                    0.25 msec on a card; 1 msec in a controller. Accuracy with reference to system clock time after a 4 msec debounce filter has been applied
                                
                             
                            
                                
                                    Scan Rate
                                
                                
                                    0.25 msec. for all 16 channels
                                
                             
                            
                                
                                    Isolation
                                
                                
                                    Each channel is optically isolated from the system and factory tested to 1500 VDC
                                
                             
                            
                                
                                    Input Impedance
                                
                                
                                    5K ohm (approximate)
                                
                             
                            
                                
                                    LocalBus current (12 VDC nominal)
                                
                                
                                    50 mA typical, 75 mA maximum
                                
                             
                            
                                
                                    Field circuit power, per card
                                
                                
                                    75 mA at 24 VDC (+ 10%)
                                
                             
                            
                                
                                    Field circuit voltage
                                
                                
                                    24 VDC
                                
                             
                            
                                
                                    Terminal Block
                                
                                
                                    32-screw termination block or 40-pin mass termination block
                                
                             
                            
                                
                                    Operating Temperature
                                
                                
                                    -40 to 70° C (-40 to 158° F)
                                
                             
                            
                                
                                    Storage Temperature
                                
                                
                                    -40 to 85° C (-40 to 185° F)
                                
                             
                            
                                
                                    Relative humidity
                                
                                
                                    5 to 95%, non-condensing
                                
                             
                            
                                
                                    Shock
                                
                                
                                    10 g½-sine wave for 11 ms
                                
                             
                            
                                
                                    Vibration
                                
                                
                                    1 mm peak-to-peak from 5 Hz to 16 Hz, 0.5 g from 16 Hz to 150 Hz