|Technical Details || |
CD280 Carrier Demodulator is a complete multi channel system in a small package
which houses a plug-in power supply and 4 carrier demodulator circuit boards.
The power supply provides regulated 5 Vac 5 kHz carrier power for Variable
Reluctance and LVDT transducers , and the carrier demodulators demodulate and
amplify the input signals to a ±10 Vdc full-scale output. Zero and span
adjustments are available for each channel. The system operates from 115 Vac,
50 to 400 Hz, line power.
The low impedance sine wave excitation allows
operation with transducers located over a thousand feet from the CD280. The
high level DC output can be fed to remote indicators and recorders. The
excitation supply and all outputs are protected from short circuits.
Input/output connections are easily made through the screw terminals on the
rear of the case.
Up to four channels are housed in each CD280
enclosure. For five to eight channels, two enclosures are used with all
channels being powered by a common power supply, thus eliminating possible
inter-channel modulation, or crosstalk effects.
The modular design permits incremental additions
to the basic four channel configuration as requirements dictate, up to a total
of eight channels; by adding a second housing and plugin demodulator boards.
The CD280-dual is an eight channel system
consisting of two 4 channel units with an integral panel.
- ±10 Vdc Outputs
- Provides Regulated 5V rms 5kHz
- 1 kHz Frequency Response
- Modular Plug-In Design