GE M
EDICAL
S
YSTEMS
D
IRECTION
FC091194, R
EVISION
02
V
IVID
7 / V
IVID
7 PRO S
ERVICE
M
ANUAL
5 - 58
Section 5-11 - Circuit Boards
5-11-6-4
Output
Output Signals
5-11-6-5
LEDs Description, Main Digital Signal Processor (DSP)
Table 5-41 Output Signals
Output
Description
Connection to:
TXTRIG_L
Starts the transmitter sequence
TX128 boards
SYNC_L
Signal used to synchronize the Beam Formers
BF64 boards
TSIG
Test Signal
RX-128 Board
ATGCVP/ATGCVN Differential signals used to control TGC on the RX Board
RX-128 Board
TX Voltage Control
One serial data line and several select lines to the TX
Supply
TX Supply
Table 5-42 FEC-2, Lower Batch of LEDs, Main DSP
LED #
LED Color
Description
Normally State
LD1
- Red
Board Failure
Normally OFF
LD2
- Green
Board OK
Normally ON
LD3
- Yellow
System in scanning mode
ON when scanning
OFF in Freeze
LD4
- Yellow
Probe Change
ON during probe change
LD5
- Yellow
No-Probe
OFF if no-probe has been selected
LD6
- Yellow
TX Overrange
OFF.
ON if excessive TX Voltage is output
Blinking, surveillance period
LD7
- Yellow
VME Access
ON when communicating with BEP.
LD8
- Yellow
DSP Running
BLINKING (1 Hz)
“heartbeat”