Then a signal producing an 0.60 ma deflection on the coding rééorder
is introduced and R-36 adjusted until the receiving recorder reads
0.80 ma.
The signal producing 0.20 ma is injected again and R-38
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readjusted to bring the receiving station to the .20 ma reading.
Then the 0.80 signal is injected and R-36 adjusted to bring the
receiving recorder to the proper level.
This process is repeated
until the Receiving Station recorder indicates the correct reading when
the voltages are alternated.
A linearity oheck is then made by.
introducing signals of various amplitudes from 0 to 1 volt on the
bridge oirouit.
The coding and receiving station recorders should
agree within 5% of full soale.
.
4.1
TBLEPULSE RECEIVING STATION
General Description
The Receiving Station telepulse unit (Fig. 17) decodes the
information transmitted from the aircraft and records a signal,
proportional to the radiation intensity at ground level on a strip
chart recorder.
‘The number of pulses in each pulse train transmitted
from the remote station are eounted and converted to a signal suitable
for driving the recorder.
The unit operates on 110 wolt 60 cycle
power.
4.2
Cirowit Description
Several sections of the telepulse receiving station circuit
(Fig. 18) are used in a telephone telemetering systen, which obtains
data from fixed ground-monitoring stations.
These will be described
first to separate them from the cirouit operation in the aerial
systen.
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