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D03283R01.10 TESLA LITE User Manual Appendix B-1
Appendix B TESLA LITE Hardware
Description
The TESLA is a modular high-quality power system recording system. It is
available in 18 and 36 channel models.
Main Processor
Board
The Main Processor Board consists of a DSP, a power PC processor, serial
ports, Ethernet ports, an IRIG-B processor, a watchdog and a power supply that
supplies the other boards. All other boards are connected to the MPB as I/O.
The MPB has a socket for an optional internal modem.
Digital Input
Boards (DIB9
and DIB18)
These board provide 9 and 18 digital input channels respectively. Inputs are
optically isolated, externally wetted, and factory preset to the customers re-
quested voltage level of 48,125 or 250 Vdc. This board interfaces to the MPB.
Digital Input/
Output Board
(DIGIO)
The DIGIO provides 11 digital input channels. Inputs are optically isolated, ex-
ternally wetted, and factory preset to the customer's requested voltage level of
48,125 or 250 Vdc. The DIGIO also provides 7 contact outputs for relaying,
alarms and control. This board interfaces to the MPB.
Rear Panel
Comm Board
(RPCB)
The Comm Board provides the TESLA LITE with two RS-232 ports, IRIG-B
time synchronization input, one network port and a modem port. The RS-232
ports are female DB-9S connectors, IRIG-B is a male BNC, the modem jack is
an RJ-11 and the network port is RJ-45.
AC Analog
Sensor Boards
(ASB)
Each TESLA LITE has 3 ASBs. Two ASBs have 3 voltage transformer inputs
and 3 current transformer inputs while the third ASB has 6 current transformer
inputs. These boards provide 12 current and 6 voltage ac analog measurement
inputs. The ASBs interface to the AIB.
AC Analog
Input Board
(AIB)
The AIB provides the analog to digital conversion of the 12 ac analog current
inputs and the 6 ac analog voltage inputs. The sample rate is fixed at 96 sam-
ples/ cycle. Each channel is simultaneously sampled using 16-bit analog to dig-
ital converters. The digitized data is sent to the MPB for processing and
implementation of the protection algorithms.
Front Panel
Comm Board
(FPCB)
The Front Panel Board provides visual indication of the status of the TESLA
LITE recorder and USB and network ports.