TM 11-5840-208-30-1
(4)
Place the TEST-NORMAL switch in TEST.
Release the ∆R handwheel from DETENT and position it for a change in the RW counter reading as given in the
(5)
∆R column of chart II.
(6)
Place the TEST-NORMAL switch in NORMAL.
(7)
Read the value of C from the graduated gears.
Chart II. C Section Accuracy Check
∆t
∆R
RL
EL
HW
C Value
0.0
1000
5000
+20
+100
0.59
0.0
1000
5000
+50
+100
1.50
0.0
1046
5000
+50
+100
1.ZZ
0.0
0863
5000
+50
+100
2.34
2.0
1000
5000
+50
+100
1.19
2.0
1000
6400
+50
+100
1.23
0.0
1000
6400
+50
-300
1.28
0.0
1000
6400
+50
+400
1.69
Unacceptable error:
When more than one computed solution for C is not within +0.06.
The one permissible error greater than +0.06 must not cause the
error in C ∆ R to be greater than 10 meters.
c.
If the correct value of C cannot be obtained, make the following adjustments:
(1) Set the lower beam elevation to +35 mils.
(2) Position the ∆R handwheel to DETENT.
(3) Set the weapon and radar height to 1, 000 meters.
(4) Set the ∆t at 0.
(5) Set the weapon range at 2, 000 meters.
(6) Connect the black test lead to J897.
(7) Connect the red test lead to J890.
(8) Connect the coaxial test lead to J872.
(9) Set the bridge potentiometer to 0202. If the meter nulls, proceed to the next step. If the meter does not null,
mechanical alignment of R831 is required. See paragraph 5-6c.
(10)Connect the red test lead to J891.
(11)Connect the coaxial test lead to J876.
Page 218
Previous Page
