Panametrics DigitalFlow XGF868i, Startup Manual

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DigitalFlow™ XGF868i Startup Guide 9
Chapter 1. Installation
1.7.2.1 Local or Remote Electronics Enclosure with Local Preamplifiers
IMPORTANT: The cable lengths for a given pair of transducers, including the preamplifier-to-electronics enclosure
cables, must be equal to within ±4 in. (10 cm) of each other.
For an XGF868i system configured with either a local or remote electronics enclosure and local preamplifiers, wire the
transducers and preamplifiers as follows:
1. The local preamplifier must be installed in the junction box on the end of the transducer. Connect the BNC cable
with the mating connector from the preamplifier to the transducer BNC connector.
2. Locate the two CH1 preamplifier-to-electronics enclosure cables and connect one to each of the two CH1
preamplifiers in the junction boxes, using the remaining preamplifier connections. Then, feed the free ends of the
cables through the selected conduit holes in the electronics enclosure.
3. See Figure 7 on page 21 for the location ( J3 ) of the connections for the Channel 1 transducers in the electronics
enclosure. Then, refer to Figure 10 to wire the transducer to preamplifier and preamplifier to electronics enclosure
connections.
Note: The RED cable leads are the SIG(+) leads and the BLACK cable leads are the RTN(-) leads.
Attention European Customers!
To meet CE Mark requirements, all cables must be installed as described in
Appendix A, CE Mark Compliance .
4. For a 2-Channel XGF868i, repeat steps 1-3 to connect the CH2 transducers to terminal block J4 in the electronics
enclosure. Note that it is not required that both channels of a 2-channel unit be connected.
5. If wiring of the system has been completed, reinstall the rear cover and o-ring on the electronics enclosure and
tighten the set screw.
Note: A channel must be activated in the Channel Menu before it can begin taking measurements. See Chapter 2,
Initial Setup , for instructions.
WARNING!
Before connecting the transducers, take them to a safe area and discharge any
static buildup by shorting the center conductor of the transducer cables to the
metal shield on the cable connector.