Atec Solar-7415-3 - Manual (Page 2)

TYPE 7415-3 R.F. COUPLER AND HIGH PASS FILTER (continued)
it is deemed to have passed the test.
Even though the signal input port of
the Type 7415-3 is rated at 20 volts, it is not recommended that the power of the signal
source be increased beyond one watt in an
effort to reach a one volt injection level.
OR 9132-1
OR 9132-1
FIG. 1 TEST SETUP FOR FREQQUENCIES FROM 50 KHz - 500 KHz
FIG. 2 TEST SETUP FOR FREQQUENCIES FROM 500 KHz - 400 MHz
Test Method CS02 requires injection of the signal
from a 50 ohm generator capable of seven volts
output. This is equivalent to a one watt source.
There are two conditions which could inhibit
the injection of one volt r.f. into the Equipment
Under Test:
1) If the r.f. impedance looking into the power
terminals of the Equipment Under Test is
considerably lower than 50 ohms at the
injection frequency, the injected signal will
be shunted and it may not be possible to
achieve the required injection voltage with a
one watt source.
2) If the connections to the power source are
heavily by-passed as in the case of screen
room testing, this will also shunt the injection
voltage so that the required level cannot be
reached. This can be prevented by inserting
an inductor in the power line as
indicated in Figure 1 and Figure 2.
The secondary of the Solar Type 6220-1A
Transformer can be used as this inductor.
Therefore, the test setup must be
carefully monitored to keep the signal source
from exceeding the required seven volts. If the
Equipment Under Test does not malfunction
with a seven volt signal from a 50 ohm source,
signal into all three wires of a three phase
power system. The Type 9407-1 network
provides this capability in a neat little box.
The unit includes a high pass filter for the
elimination of power frequency voltages.
Rating of 270 VAC at the LINE terminals and 20
volts rms into the GEN. Port.
Dimensions: 2.88" (73 mm) x 3.06" (78 mm) plus
mounting flanges x 2.0" (51 mm) high.
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