Dynalco SW-50, Инструкция по установке и калибровке

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Installation:
Mount the SW-50 to a secure bracket off the engine. If on-engine mounting is
necessary, shock mounts are recommended. Wire according to connection
diagram on reverse. Shielded cable is recommended. Shield should be brought
to ground directly. The SW-50 will work with most magnetic pickups provided
the signal amplitude is greater than 50 mVrms and less than 70 Vrms. Mount
pickup according to manufacturer’s instructions.
Calibration:
Determine the setpoint frequencies from an RPM value using the following
formula:
Verify current calibration:

Connect a signal generator
— such as the Dynalco F-16 — to the SW-50
magnetic pickup input (signal input).

Set the signal generator to a low frequency. Slowly increase the frequency.
Using an ohmmeter across each relay contact, in turn, determine the frequency
at which the relays change state. (Note: overspeed relay will latch if terminal 4
is not grounded.)
Change the setpoints:

Remove the screws in the access holes for the relay adjustment trim pots.

Set the signal generator to the frequency at which the relay should change
state.

Using a small, flat screwdriver, adjust the trim pot for the appropriate relay until
the relay changes state.

Decrease the frequency, and then slowly increase it to verify that the relay trips
at the appropriate point.