3M 965DPS instruction manual Self-Test Board, Measurement Type of Cable US and Canada

Self-Test Board

A self-test board is included with the 965DSP to verify the performance of Opens and RFL. This is particularly important if operating conditions (shock, temperature, etc.) have changed and you want to check the unit's accuracy.

Check Opens performance: To verify Opens, connect the red test lead to the “R” terminal, and the black test lead to the “B” terminal. Press the [Opens] key on the 965DSP. You should see the following readings for different types of cable (US and Canada).

Note: Do not connect the green test lead to the “G” terminal of the self-test board when checking Opens performance. The ‘Red to Green’ measurement will not read correctly.

Measurement	Type of Cable (US and Canada)
		Capacity	Aircore	Jelly-filled
Red to Green	MIN	9.35 nf	395 ft	350 ft
or			(120 m)	(107 m)
Black to Green
	MAX	.011 uF	450 ft	400 ft
			(137 m)	(122 m)
Red	MIN	9.35 nf	595 ft	595 ft
			(181 m)	(181 m)
to
Black	MAX	.011 uF	680 ft	680 ft
			(207 m)	(207 m)

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