Internal test method for facsimile transceiver

Details Internal test method for facsimile transceiver Internal test method for facsimile transceiver

1974-05-01

1976-02-10

Safourek, Benedict V.

Telegraphy

Systems

Simplex-reversing periodic

178 66R, 178 71, 179DIG4, H04N 106, H04N 132

Patent

active

039378721

ABSTRACT:
The transmitting and receiving sections are both energized, and the output of the transmitting section is connected to the input of the receiving section. The intensity of the transmitting section light source is varied, as by opening and closing a switch, and if the output of the receiving section is accurate in response to the light source variation, the transmitting and receiving sections are judged to be operating normally.

REFERENCES:
patent: 3598910 (1971-08-01), Johnston

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