where DT represents the true distance:
time marks multiplied by 0.0394 and Ddiff
b. Adjustments. No adjustments can be made.
represents
the
difference
between
17. Event Marker, 1 SEC.
measured distance and true distance.
a. Performance Check.
0.394-0.392
Example: Error is
0.394
X 100=0.51%
(1) Set CHART SPEED to 1 mm/SEC and
(7) Set CHART SPEED to 5 mm/ SEC and
EVENT MARKER to 1 SEC. A mark
run about 200 mm of chart paper (5 mm =
should occur at each millimeter mark.
0.197 inches). Calculate accuracy as
(2) Set CHART SPEED to 5 mm/SEC and
shown in step (6) above.
EVENT MARKER to 1 SEC. A mark
(8) Set CHART SPEED to 20 mm/ SEC and
should occur every 5 millimeters.
run about 200 mm of chart paper (20 mm
b. Adjustments. No adjustments can be made.
= 0.788 inches). Calculate accuracy as
shown in step (6) above.
18. Span Accuracy.
(9) Set CHART SPEED to 100 mm/ SEC and
a. Performance Check.
run about 800 mm of chart paper (100 mm
= 3.94 inches). Calculate accuracy as
(1) Set dc voltage standard (Al) to 0 Vdc and
shown in step (6) above.
connect to input of CHANNEL 1
preamplifier with cable (B 3).
(10) Disconnect time mark generator from
preamplifier input.
(2) Set CHART SPEED to 5 mm/SEC, INPUT
switch to OPR and CHANNEL 1 pen
b. Adjustments. No adjustments can be made.
position to right hand grid line.
16. Paper Weave.
(3) Set preamplifier RANGE switch and apply
dc voltage standard output as indicated in
a. Performance Check.
(1) Set CHART SPEED to 1 mm/ SEC and
within tolerance does not occur, perform
INPUT switch to ZERO.
18 b. adjustments.
(2) Position channel 1 pen on extreme left grid
(4) Set CHANNEL 1 pen position to left hand
line and channel 2 pen on extreme right
grid and apply negative voltages from the
grid line.
dc voltage standard and perform the test
as indicated in table 5.
(3) Select various speeds and run about 400
mm of chart paper (15.76 inches).
(5) Repeat steps (1) through (4) above for
channel 2.
(4) Traces should be straight on grid lines and
should not vary more than 1/2 minor chart
b. Adjustments.
division peak-to-peak.
(1) Remove left cover. See
.
TB
96625-2802-35
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