Teledyne SeaBat T Series, Руководство оператора, Страница: 125 / 152

PPS IN AND TRIGGER IN
SeaBat T-Series Subsea Operator's Manual Page 113 January 31, 2019
Version 7
APPENDIX D PPS IN AND TRIGGER IN
D.1 Electrical Specifications for PPS In and Trigger In
Table 21: PPS In and Trigger In Signals 31
Parameter Min. Typical Max. Unit Note
Absolute maximum 32
signal voltage
15 V
Absolute maximum
reverse signal voltage -1 V
Low voltage threshold 1 1.6 V
High voltage threshold 1.6 1.8 V
Input current (high)
@2V
@3V
@5V
@15V
7
8
10
20
mA
mA
mA
mA
Input current (low
33
) 0
Input delay 400 1000 ns Pulse 0V to 2V, 50 Ohm
D.2 Typical PPS In and Trigger Performance
50 Ohm
220 Ohm
470 Ohm
1k Ohm
Required PPS pulse width
PPS pulse
width (ns)
PPS source voltage (V)
Figure 66: Required PPS Pulse Width
31 Measured at the BNC terminals.
32 Voltages beyond maximum limits may cause permanent damage to the input.
33 Completely unconnected input guaranteed to be low.