TB 9-4920-359-35
(i) Press MEASUREMENT RESTART.
(4) Position controls as listed in (a) through (c) below:
(a) TRIP TIME START switch to off (down).
(b) TEST SELECT switch to 3∅ OVB.
(c) Press frequency counter RESTART.
NOTE
Always press frequency counter RESTART button as many
times as necessary to clear display before placing TRIP TIME
START switch to on (up).
(d) TRIP TIME START switch to on (up).
(5) If frequency counter does not indicate between 100 and 140 ms, perform b (1) below.
(6) Disconnect hookup from J4 T2 CAL and connect to J3 T1 CAL.
(7) Position controls as listed in (a) through (c) below:
(a)
TRIP TIME START switch to off (down).
TEST SELECT to A∅ UV.
(b)
(c)
Press frequency counter RESTART.
(d)
TRIP TIME START switch to on (up).
(8) If frequency counter does not indicate between 3.0 and 4.0 s, perform b (2) below.
(9) Disconnect hookup from J3 T1 CAL and connect to J4 T2 CAL.
(10) Set TRIP TIME START switch to off (down), press frequency counter
RESTART, then set TRIP TIME START switch to on (up). If frequency counter does not
indicate between 4.5 and 5.5 s, perform b(3) below.
(11) Disconnect hookup from J4 T2 CAL and connect to J3 T1 CAL.
(12) Position controls as listed in (a) through (c) below:
(a)
TRIP TIME START switch to off (down).
(b)
TEST SELECT switch to UND FREQ.
(c)
Press frequency counter RESTART.
(d)
TRIP TIME START switch to on (up).
(13) If frequency counter does not indicate between 900 and 1100 ms, perform b (4) below.
(14) Disconnect hookup from J3 T1 CAL and connect to J4 T2 CAL.
(15) Set TRIP TIME START switch to off (down), press frequency counter
RESTART, then set TRIP TIME START switch to on (up). If frequency counter does not
indicate between 2.5 and 3.5 s, perform b (5) below.
b. Adjustments
(1) Adjust R1 (fig. 3) for a frequency counter indication of 120 ms (R).
(2) Adjust R5 (fig. 3) for a frequency counter indication of 3.5 s (R).
(3) Adjust R3 (fig. 3) for a frequency counter indication of 5.0 s (R).
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