WA-1150 and WA-1650 Wavemeter Operating Manual
Appendix D
Rear Panel Controls
EXFO Burleigh Products Group Inc. (09042-M-00 Rev C)
D-3
This causes the system controller to examine all eight bits of a received character to
determine if it is an EOS character.
Terminate Read on EOS = Yes
The instrument terminates all of its messages with an EOS character. It never uses the
EOS character within a message. Therefore, when the system controller receives an EOS
character from the instrument, it can assume that it has received the last character of the
message.
GPIB Bus Timing = 2000 ns or 2 µs
This sets the minimum time that the system controller will assert the DAV signal after
driving a byte onto the bus.
RS-232 Interface
The RS-232 port is a 9-pin, female, D-sub style connector, with the pinout described
below. The connector housing provides connection to the earth ground inside the
instrument.
The pin configuration complements that of the PC/AT. To connect the instrument to a
PC/AT, use a serial extension cable with 1:1 pin correlation. To facilitate the connecting
of the serial port, use the signal descriptions (H = Active).
RS-232 Serial Port Pinout
Pin
Number
Signal
Name
Signal Source
Description
1
-
-
N/C
2
TxD
WA-1150/1650 Transmit Data. Data from the instrument is output on this signal
pin.
3
RxD
User
Receive Data. Data from the user is received on this signal pin.
4
DSR
User
Data Set Ready. This input signal must be held active by the user
for the instrument to consider the serial port connected to an
external device.
5
GND
-
Signal Ground. Required for proper RS-232 operation.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com