Operation
5
HP289
3.
Operation
The Model 214D-1 uses a low power CMOS microprocessor to
perform all control functions and calculations.
The instrument is fully configurable with all operating parameters and
calculation constants user settable. (See Section 5 entitled
"Configuration" for information on configuring.) All parameters and
constants are stored in a non-volatile memory which retains data
without battery backup for a minimum of 10 years.
A block diagram of the instrument is shown below.
Summary of Contents for 214D-1
Page 2: ...HP289...
Page 6: ...HP289...
Page 10: ...Introduction HP289 2B This page intentionally left blank...
Page 32: ...24 Options HP289 Figure 2 RS485 Interface...
Page 46: ...38 Input Circuits HP289 The Frequency Input Circuit...
Page 47: ...Input Circuits 39 HP289 1 MAG Coil 2 Redi Pulse CMOS or Pulse 3 Redi Pulse Open Collector...
Page 48: ...40 Input Circuits HP289 4 Squarewave CMOS or Pulse 5 Open Collector 6 Reed Switch...
