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
