HP IEEE 1394 - Manual (Page 67)

66 Specifications Appendix A
CLK 10
External Trigger Input
External Trigger Output
Clk In
Input TTL
Frequency Stability 100 ppm
Duty Cycle 50% ± 5%
Clk Out
Output TTL
Frequency Stability 100 ppm
Duty Cycle 50% ± 5%
Connector SMB (on faceplate)
Levels TTL, CMOS, ECL, 0 to +33V
Programmable Threshold
Range
0 to +30V
Programmable Threshold
Accuracy
± 0.4V
Threshold Sensitivity
(hysteresis)
0.5 Vpp maximum
0.1 Vpp minimum
Input Load 50 pf, 55 kohms
Maximum Rate 2 MHz
Minimum Pulse Width 200 ns
Connector SMB (on faceplate)
Levels nominal pull up to + 5V
Maximum External Pull Up + 30V
Sink Current 10 mA @ V
ol
< 0.4V or
150 mA @ V
ol
< 1.0V
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