Each station will
record measurements made on both the send and receive sides of the circuit
Analyzed data will be recorded on Circuit Parameter Test
Report, DD Form 1697 (figure 3-3).
(1) Input circuit.
(a) Connect the equipment to the input of the circuit under test
as indicated in figure 1-14. Electrical center between the pair of wires is
provided by the transformer secondary. Input and output impedances of the
transformer are both 600 ohms. Since the transformer has a 1:1 turns ratio,
it neither steps up nor steps down the test signal voltage.