Radian RM-111 - Accuracy; Inputs (Ports A, B, C and D)

RM-111 Operations Manual
Specifi cations
Specifi cations
9
2.4 Accuracy
Digital Gating
Total % Error: Open collector less than: .0001
Potential Gating
Total % Error: Electronic output less than:
(.0005 sec / T) + (Ipot * .02 ohms / Vpot) * 100
Potential Gating
Total % Error: Mechanical Output less than:
(.002 sec / T) + (Ipot * .004 ohms / Vpot) * 100
(T: length of test in seconds)
(Ipot: current draw of potential)
(Vpot: potential test voltage)
2.5 Inputs (Ports A, B, C and D)
Pull-Up Port A: 150 ohm
Pull-Up (Ports B, C, D): 150 ohm / 1000 ohm, user defi ned,
Maximim Input voltage (Ports A and B): 5 volts - 500mW zener clamp at 6.2 volts (85mA
maximum zener current)
Maximum Input Voltage (Ports C and D): 25 volts - 500 mW zener clamp at 33 volts (14.4mA
maximum zener current)
Maximum Frequency (Ports A - D): 2.1 MHz per port
Minimum Input Pulse Width (Ports A - D): 200nS
Schmitt Trigger Levels: Ports A and B Ports C and D
Positive going threshold Max.: 1.90V 2.10V
Positive going threshold Typ.: 1.39V 1.65V
Negative going threshold Typ.: 0.67V 0.93V
Negative going threshold Min.: 0.23V 0.53V
Minimum hysteresis: 0.40V 0.40V
Maximum hysteresis: 1.40V 1.40V