MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL
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3-7.
Connector Configuration
482C27 provides BNC jack inputs for ICP
sensors or voltage inputs and an 8 pin DIN connector NRSE, RSE,
differential voltage and bridge (quarter, half, full) mode sensor inputs. The output connector is a BNC jack.
3-8.
Channel Input Mode Selection
This setting allows the user to select the input mode of each channel. The selection is made through control software or
the front panel keypad. The functionality of a channel in ICP
or voltage mode is identical except the bias current does
not flow in voltage mode. Accordingly, when voltage mode is selected, the unit will automatically set the current to zero
(0) mA for the specified channel. With no ICP
excitation present on the input connector, the channel is simply a
voltage amplifier. Differential voltage, bridge (quarter, half, full), RSE and NRSE are additional input modes.
The factory default is ICP
input mode for all channels.
3-9.
Bridge/Differential/RSE/NRSE Sensor Connection
The following diagram illustrates the proper connections for NRSE, RSE, differential voltage and bridge (quarter, half,
full) mode sensor inputs.
NOTE:
If the sense lines are not used they should be tied to the excitation lines.
3-10. RS-232 & Ethernet connections
See section 4.0 for remote control interface details.
3-11. Non-Volatile Memory
This feature keeps the programmed configurations stored when the unit is powered down. When the unit is turned on, all
programmable features (e.g., gains, filter status, input mode) active at last use are preserved. When the unit is powered
down the non-volatile memory is updated with the current channel settings. The unit’s non-volatile memory may be reset
to the factory default settings by using the reset menu option.
3-12. Transducer Electronic Data Sheet (TEDS) Interface:
Model 482C27 has the capability of reading TEDS sensors. They attach to the input connectors the same way traditional
ICP
sensors are attached. The digital control and input mode features automatically perform the TEDS read or write
function.
The current TEDS function will perform a read of the “raw” TEDS data and return the 32 bytes of TEDS sensor
EEPROM data and the 8 byte Application register contents, if it was programmed, and returns the data in an ASCII Hex
representation. This raw date can be decoded using PCB’s multi-channel signal conditioner software (PN EE75).
