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Strobe Output
Your instrument can be used to regulate the output frequency of an
attached strobe lamp. Alternatively, it can be used to read the output of
a strobe as a tachometer signal. This capability is helpful when
identifying the source of vibration and unbalance in high speed
machinery. It is also useful as a means of visually inspecting the
condition of equipment while it is in motion.
Depending on the capabilities of the strobe, machine speeds of up to
140 Hz, 8400 CPM are supported. Some strobe models may only support
frequencies below approximately 80 Hz, 4800 CPM.
NOTE: This feature requires a LEMO-to-strobe (LEMO to twin 3.5
mm plugs) cable and a suitable externally-controllable strobe
lamp.
Ensure you connect only one 3.5 mm plug at a time (either the black
Read or red Drive plug. Connecting both Read and Drive plugs to the
strobe's input and output sockets will typically force the strobe into
external Drive mode. This will disable the strobe's ability to read and
provide a tachometer signal to the instrument.
NOTE: To read tachometer speed from a strobe, the strobe's output
must be set to output a positive signal (NOT a negative one). This is
only required on some strobe models, such as some Monarch
models. Read the strobe's operating instructions for details.
Section 4 — Measurement Types and their Uses
48
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