Signal Name List A3 - Fluke PM3082 Service Manual

UNITS DESCRIPTION
The signal ZINFO-LT that comes from pin 80 of D1401 determines the intensity of the text and
cursors. This happens via the output current signals ZTXTO and ZTXT1 that are in opposite phase.
They originate from the circuit with V1448, V1449, V1443, V1444 and V1446. Intensity is also
controlled by the front panel INTENS TEXT rotary that influences the DAC output signal INTRDO.
Diagram 5
Diagram 5 shows the pinning of the two connectors on microprocessor unit A3. Connector X1101
makes contact with the motherboard. Connector X1501 makes contact with the signal unit A1 via a
flat cable. D1931 is a real-time clock that may be present as a factory-installed option.
5.3.2

Signal name list A3

Note: In the signal name list you find the itemnumber of the component that is source or destination.
Behind this itemnumber (separated b y y o u find the number of the diagram where the
source/destination can be found.
NAME
CPCTS
CPDSR
CPDTR
CPRTS
CPRXD
CPTXD
DACPEN-LT
DACPWR-LT
DLENO-HT
DLEN1-HT
DLEN2-HT
FOCUS-DA
HOLDOFF
INTTRA
MTBVAR
LEVDTB
LEVMTB
POS1
POS2
POS3
POS4
POWER-HT
PRMUXO
PRMUX1
PRMUX2
PROBE1
PROBE2
PROBE3
PROBE4
PTEST-XA
SCL
SCLUP
SDA
SDAUP
STROBEO-HT
STROBE1-HT
MEANING
RS232 CLEAR TO SEND (TTL)
RS232 DATA SET READY (TTL)
RS232 DATA TERMINAL READY (TTL)
RS232 REQUEST TO SEND (TTL)
RS232 RECEIVE DATA (TTL)
RS232 TRANSMIT DATA (TTL)
ENABLE SIGNAL FOR DACPOT CIRCUIT
WRITE SIGNAL FOR DACPOT CIRCUIT
DATA LATCH ENABLE 0
DATA LATCH ENABLE 1
DATA LATCH ENABLE 2
DC PART FOCUSING SIGNAL
HOLD OFF CONTROL SIGNAL
TRACE INTENSITY CONTROL SIGNAL
MAIN TB VAR CONTROL SIGNAL
DELAYED TB LEVEL CONTROL SIGNAL
MAIN TB LEVEL CONTROL SIGNAL
CH1 POSITION CONTROL SIGNAL
CH2 POSITION CONTROL SIGNAL
CH3 POSITION CONTROL SIGNAL
CH4 POSITION CONTROL SIGNAL
POWER UP INDICATION SIGNAL
PROBE READ-OUT MPX CONTROL 0
PROBE READ-OUT MPX CONTROL 1
PROBE READ-OUT MPX CONTROL 2
PROBE DETECTION/50C PROTECT CH1
PROBE DETECTION/50Q PROTECT CH2
PROBE DETECTION/5CX2 PROTECT CH3
PROBE DETECTION/50O PROTECT CH4
PROBE TEST SIGNAL
SERIAL CLOCK
SERIAL CLOCK AT MICROPROCESSOR
SERIAL DATA
SERIAL DATA AT MICROPROCESSOR
STROBE/ENABLE SIGNAL 0
STROBE/ENABLE SIGNAL 1
5.3-3
SOURCE DESTINATION
D1301:02 D1001:01
D1301:02 D1001:01
D1001:01 D1302:02
D 1302:02
D1001:01
D1301:02 D1001:01
D1001:01
D1302:02
D1016:01 D1112:03
D1016:01 D1112:03
R1063:01
X1101:05
R1064:01 X1101:05
R1066:01
X1101:05
R1136:03 X1101:05
R1122:03 X1501:05
R1123:03 X1501:05
R1124:03 X1501:05
R1126:03 X1501:05
R1125:03
X1501:05
R1129:03
X1501:05
R1132:03 X1501:05
R1134:03 X1501:05
R1128:03 X1501:05
X1101:05 D1007:01
D1001:01 D1008:02
D1001:01 D1008:02
D1001:01 D1008:02
X1101:05 V1014:02
X1101:05
V1013:02
X1101:05 V1012:02
X1101:05 V1011:02
D1008:02 D1001:01
R1054:01
X1101:05
D1001:01 R1053:01
R1052:01 X1101:05
D1001:01 R1051:01
R1067:01
X1101:05
R1068:01 X1101:05