TM 5-6675-325-14
ac.
Out-of-phase adjustments.
NOTE
Out-of-phase adjustment is used when there is constant section interval,
but sections are not even elevations.
(1) Determine phase differential.
NOTE
Program II automatically locates next even elevation from first section
entered.
Determine what this number is, and subtract it from desired
second elevation.
Result is phase differential.
Example:
Running vertical sections at 100-ft intervals
525
= Desired second elevation
- 600
= Next even 100-ft elevation
-75 = Phase differential
Example:
Running contours at 10-ft intervals
1215
= Desired second elevation
- 1210 = Next even 10-ft elevation
+5
= Phase differential
(2) Key in phase differential.
ad.
Linear measurements on aerial photographs of unknown scale or magnification.
To make linear measurements of aerial photographs, there must be a known length of
an object.
This known factor is used to compute constants needed for measurements.
(1) Assemble QPS with measuring probe.
(2) Activate QPS.
(a) Plug foot switch into ACCU input jack on back panel of auto-scaler.
(b) Plug linear measuring probe into E1 encoder socket on back panel of
auto-scaler.
(c) Plug power transformer cable into POWER jack on back of auto-scaler.
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