Before the polarity is reversed, the output is disabled. The polarity reverse relays are then engaged. The output is then re-enabled. You cannot hot-switch the polarity reverse relays.
Applies to: N6950A, N6951A, N6952A, N6953A, N6954A, N6970A, N6971A, N6972A, N6973A, N6974A, N6976A, N6977A
Applies to: N7950A, N7951A, N7952A, N7953A, N7954A, N7970A, N7971A, N7972A, N7973A, N7974A, N7976A, N7977A
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