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5820A
Operators Manual
Serial Connectors
The two 9-pin serial connectors on the rear panel of the 5820A Calibrator are used to
interface with a computer, or controller, and an instrument serial port. The pin
assignments of the rear-panel serial connectors are in conformance to EIA/TIA-574
standard and are shown in Figures D-1 (Host) and D-2 (UUT).
Serial connection cables are available from Fluke are shown in Table D-2. See Chapter 9
for ordering information.
5820A SERIAL 1 FROM
HOST
5820A SERIAL 1 FROM
HOST
5820A SERIAL 2 TO UUT
5820A SERIAL 2 TO UUT
TRANSMIT DATA(Tx)
D-2
Table D-2. Serial Port Connection Cables
Connection Cable
TRANSMIT DATA (Tx)
RECEIVED DATA (Rx)
REQUEST TO SEND (RTS)
Figure D-2. SERIAL 1 FROM HOST Port Connector Pinout
GROUND
5
9
CLEAR TO SEND (CTS)
Figure D-3. SERIAL 2 TO UUT Port Connector Pinout (connection side)
PC COM port (DB-9)
PC COM port (DB-25)
UUT serial port (DB-9)
UUT serial port (DB-
25)
1
5
6
9
CLEAR TO SEND (CTS)
1
6
DCE READY (DSR)
REQUEST TO SEND (RTS)
Fluke Part Number
PM8914/001
RS40
943738
n/a
DTE READY (DTR)
GROUND
RECEIVED DATA (Rx)
RECEIVED LINE SIGNAL
DETECTOR (RLSD)
oq049f.eps
oq050f.eps
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