GE M
EDICAL
S
YSTEMS
PROPRIETARY TO GE
D
IRECTION
2294854-100, R
EVISION
3
LOGIQ™ 9 P
ROPRIETARY
M
ANUAL
7-26
Section 7-7 - Acquisition Diagnostics
7-7-4-3Board-Level EQ Diagnostics
•
EQ Signal Path Diag
: Tests the entire EQ data path, in all it's modes and available options. This
diagnostic will utilize the TGC RAM in conjunction with a constant value loaded into the Input Barrel
Shifter. Scans will then be run, under the control of the SCB. In this way, the TGC section of the
board can both be tested and also made to form test vectors for the rest of the signal chain.
Specifically, the following functions are tested:
-
TGC generation and analog/digital apportioning
-
Scan Bus Interface
-
Output Drivers
-
Signal Chain, including:
*
Input Barrel Shifter and Multiplier (digital TGC)
*
NCOM and FIR (TFC)
*
Output Barrel Shifter
Processed IQ data out of the EQ and input to the SCB may then be read from the Image Port's Ring
Buffer and compared to gold file data for verification and fault isolation.
7-7-4-4
Board Level EBM Diagnostics
BT’02 Systems and higher contain the EBM Board than combines the functions of the previous EQ4
and BMP4 boards.
The BMP diagnostics previously mentioned will test the BMP portion of the EBM board and the EQ
diagnostics will check the EQ portion of the EBM board.
Figure 7-24 Example: EQ Board PCI Test Passed
