Optical analog data link with simple self-test feature
- Commack, NY
A communications circuit for optically transmitting analog data signals free of excessive ripple, while having rapid response time. The invention is further characterized by being adapted to provide an immediate indication of the failure of the optical transmission link of the circuit. Commercially available voltage to frequency converter chips are used in conjunction with suitable wiring arrays and in combination with readily available indicator means for constructing the communication circuit of the invention. A V/F converter in the communications circuit is coupled to an offset adjustment means to cause the converter to continuously produce a string of output voltage pulses having a frequency of about 1 Khz responsive to the input analog signal to the converter being zero. The continuous presence of the 1 Khz frequency on the optical transmission link is monitored at the receiving end of the communication circuit and the indicator means is connected to immediately provide an easily detected indication of a failure of the optical transmission link to transmit the 1 Khz frequency pulses.
- Research Organization:
- Associated Universities, Inc., Upton, NY (United States)
- DOE Contract Number:
- AC02-76CH00016
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 4633523
- OSTI ID:
- 866097
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
analog
data
link
simple
self-test
feature
communications
circuit
optically
transmitting
signals
free
excessive
ripple
rapid
response
time
characterized
adapted
provide
immediate
indication
failure
transmission
commercially
available
voltage
frequency
converter
chips
conjunction
suitable
wiring
arrays
combination
readily
indicator
means
constructing
communication
coupled
offset
adjustment
continuously
produce
string
output
pulses
khz
responsive
input
signal
zero
continuous
presence
monitored
receiving
connected
immediately
easily
detected
transmit
optical analog
adjustment means
transmission link
optical transmission
output voltage
voltage pulse
voltage pulses
response time
analog signal
commercially available
readily available
data signals
data signal
analog data
rapid response
frequency pulses
optically transmitting
frequency converter
continuously produce
easily detected
frequency pulse
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