Installation & Operation Manual for the
7
Active Vibration Cancellation (AVC) System
Instrumentation Wiring Harness
The instrumentation wiring harness (figure 7) has five connections:
•
Computer Connector
– A molded plastic, 9-pin, female RS-232 serial communications connector that con-
nects to an RS-232 serial port on a computer for relaying control commands and replies.
•
AVC Controller Instrumentation Wiring Harness Connector
– A molded plastic 37-pin D-sub connector
that connects to the instrumentation wiring harness connector on the AVC controller.
•
Over-Temp Thermistor Connector
– A small, black, two-pin plastic connector that connects to the plastic
connector on the over-temp thermistor cable.
•
Accelerometer Connector
– A small, black, three-pin plastic connector that connects to the plastic connector
on the accelerometer cable.
•
RTD Leads
– Four leads that connect to the Resistance Temperature Detector (RTD) wire supplied with the
cryocooler. The RTD wire is attached to an RTD which is attached to the thermal load or to the cryocooler’s
cold tip as described in the cryocooler installation and operation manual.
Figure 7. Instrumentation Wiring Harness
