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Altek Model 40A Frequency Sources provide 40 precise
frequencies from 0.5 to 60,000 Hertz. Output is a square
wave of 15 volt peak-to-peak amplitude which can be set
to any lower value with a built-in attenuator. Switch
selects zero based or zero center outputs for standard
or zero crossing outputs. The Altek Model 40A checks
and calibrates the electronics of turbine meters, vortex
shredding meters, positive displacement meters,
oscilloscopes, electronic counters, tachometers and many
other frequency input devices. LED flashes to calibrate
optical and fiber optic devices.
Frequency Accuracy is ±8 parts
per million. Long term stability is ±3 parts per million
per year.
Instant turn-on allows long life
from the two 9 volt alkaline batteries (200 hours
continuous). Frequency is adjusted with the 8 position
frequency selector switch and a 5 position range
multiplier switch.
The low cost ALTEK Model 40A is
a complete, compact source for checkout and calibration
of all frequency instruments in the field, shop, lab,
and control room. |
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