Teac GX-1, Инструкция по эксплуатации

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Amplifiers
4-32
Pulse Input Amp (AR-GXPC)
Like the AR-GXFV, the AR-GXPC inputs pulse signals from sources
such as a revolving body; however, the AR-GXFV converts pulses to
voltages whereas the GR-GXPC counts pulses directly. Available
modes include the Total Mode in which the total number of pulses is
recorded, and the Gate Mode in which the number of pulses in a speci-
fied gate period are counted. You use Count Type to specify the gate
period in the Gate Mode as a multiple whole integer (1 to 255) of the
sampling period.
Also like the AR-GXFV, the AR-GXPC has a division function for
counting a large number of items. You use Divide Rate to specify this
function.
Like the AR-GXFV, use Change Unit when you want to process in
rpm. In this situation, keep in mind the values specified with Divide
Rate and Count Type. For example, when 1 revolution is 360 pulses
(pulse angle is 1˚ for each pulse) and there are 100 revolutions per sec-
ond (6000 rpm), record this with a sampling frequency of 100 Hz. If
Divide Rate is set to 1/90 (conversion to 4 pulses per revolution) and
Count Type is set to 100 (effectively resulting in the number of pulses
per second), then the pulses counted per second will be 400; so in
Change Unit, specify 400 cnt = 6000 rpm, and any later processing
will be in rpm.