Hummingbird Communications Paracube Micro, Инструкция по эксплуатации

Страница: 17 / 38

14 of 35 01115009A _9
Paracube
®
Micro – Instruction Manual
PCB Mounted SMT Connector - Molex No 532610471, Fig. 6
1.25mm (.049") Pitch PicoBlade™ Header, Surface Mount, Right Angle.
Mating crimp housing required by end-user Molex part number
0510210400 used in
conjunction with crimp terminal part number 0500798000.
Fig. 6
P1 P2 P3 P4
+5V Analogue mV Signal Analogue 0V Earth/Ground
Table 1
Connector Details
Pins 1 and 4 (P1 and P4) shown in table 1 above are used to supply power to the
sensor, pins 2 and 3 (P2 and P3) provide the sensor’s mV output.
Earthing Arrangement
The sensor does not require an external earth connection. Electrostatic potentials are
discharged via the power supply 0V connection.
Electrical Separation
The electrical connections to the sensor should be kept to a minimum length. The
cable should be of a shielded 4-core construction; connect the electrical screen to the
equipment chassis earth star point.
4.3 Analogue Output
The analogue output is provided via the processor’s DAC and updates the reading
every 200ms +/- 5ms ( 5 readings every second). The analogue output is a differential
measurement between analogue 0V (Pin3) and analogue mV signal (Pin2). Do not
connect analogue 0V (Pin3) and Earth / Ground (Pin4) together as any contact
resistance will introduce offsets to the analogue signal.
The host equipment must provide an input impedance of >1M
Ω