Max Machinery 286-300 SERIES TRANSMITTERS - Manual (Page 16)

286-314: Transmitter with Amphenol Connector, Level Shifter Option
286-324: Transmitter, Weather-Tight, Explosion Proof, Level Shifter Option
286-314-500: Remote Transmitter (Aluminum Housing), Level Shifter Option
286-314-525: Remote Transmitter (Polycarbonate Housing), Level Shifter Option
General
Both the standard and remote transmitter circuit boards have the capability for additional circuitry that
gives output voltage levels equivalent to the power supply voltage. For example, if the transmitter is
powered with +12 Volts the output will be a 12V square wave. The circuit board used in the level
shifter version is identical to the standard circuit board, with the exception of some additional
components (R29,R30, and U9) and some that are absent (R23, R24, and D1). The output
specifications, some different than those on pg. 3 due to the level shifter, are listed below. All other
specifications from pg. 3 not reprinted here remain unchanged.
Output Level Shifter Specifications
Supply Voltage........................................................................ 4.5 VDC to 30 VDC
Supply Current.................................... 38mA Typical, 32-43 mA Range (+ Load)
Output (12.0V Supply) ........................................................................................ Hi
Lo
No Load.............................................................................................. 12.0 V 0.1 V
2.5k Load to Common........................................................................ 11.0 V 0.1 V
2.5k Load to +12 Volts....................................................................... 12.0 V 1.0 V
Short Circuit Current
5
....................................................................... 120 mA
Output Impedance ............................................................................... 100
Rise Time ................................................................................. 0.8 uS (90%)
Fall Time .................................................................................. 1.0 uS (90%)
Maximum Frequency .........................................................................60 kHz
Minimum Frequency ..............................................................................0 Hz
5
Continuous Short Circuit is not recommended. The output current should not exceed 30 mA per output.
286-300-350 © 2002, Max Machinery, Inc. (16)
Appendix B: Output Level Shifter Option
Discontinued