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8.1.2.4 Packed 8-bit over two SDBs (Only applicable to the SMT380)
In this mode the ADC data is converted to 8-bit signed data. The samples are then distributed between the
LSB eight bits and MSB eight bits before it is redistributed between primary and secondary SDB
connectors at a quarter of the clock rate. The primary connector will transmit the first two samples
(LSB[0],MSB[1],LSB[4],MSB[5]..), while the secondary connector will transmit the next two
(LSB[2],MSB[3],LSB[6],MSB[7]..). For channel A use Jo3 (primary) and Jo4 (secondary), for channel B
use Jo1 (primary) and Jo2 (secondary).
8.2
LED Indicators
Led: LD1 will be ON if clipping on Channel A occurs.
Led: LD3 will be ON if clipping on Channel B occurs.
Led: LD2 will be ON if test value generation for Channel A is enabled.
Led: LD4 will be ON if test value generation for Channel B is enabled.
Led: D1 will be ON if +5V is present.
Led: PD1 will be ON if +3.3V is present.
Led: PD2 will be ON if –12V is present.
Document Name:
SMT340_360_380_User_Manual_Rev01_Iss01.doc
Document Number:
TBD
Author:
PC Pelser / MR Vogel
Document Title:
SMT340/360/380 User Manual
Preliminary
Revision:
01
Original Date:
25 June 2001
Revision Date:
25 June 2001
Page 15 of 28
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