Figure 1-15. Location
Transducer Brackets, T-63 Engine
e. Disconnect the vibration meter from the source
of power used for preliminary meter warmup, and
immediately connect it to the airframe power.
1-34. ELECTRICAL CONNECTORS. The electrical
connectors for the vibration meter are listed in fig-
ure 1-21. The locations of the electrical connectors
To prevent undue cooling off of the vibration
meter, it must not be without power for more
than two minutes.
OF VIBRATION METER.
f . Connect the cable assemblies to the proper
1-36. The vibration meter is designed for direct
reading when used with a Type 4-128-0101 Vibration
Transducer or when used with any self-generating
1-31. POWER SUPPLY CONNECTIONS. The vibra-
tion meter is shipped wired for operation into a 115V
(or less) and velocity sensitivities which lie between
ac power source. If it is desired to operate the
50 and 150 millivolts per inch per second, or 5 and
vibration meter from a 230V ac power source, change
15 millivolts per degree per second. Each channel
may be calibrated to give direct readings with vibra-
(detail B), and replace the 1 amp fuse with a 1/2 amp
tion transducers whose electrical characteristics lie
within these ranges. There is no interaction between
channels, thus fewer than four channels may be used.
1-32. CONTROLS, INDICATORS, AND
In the following paragraphs, vibration transducer
1-33. OPERATING CONTROLS AND INDICATORS.
operation is essential to the proper operation of the
Operating controls and indicators for the vibration