Stanford Research Systems SR865A, Operation Manual

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96 Operation Chapter 3
SR865A DSP Lock-in Amplifier
Rear Panel
Power Entry Module
The power entry module is used to fuse the ac line voltage input, select the line voltage,
and block high frequency noise from entering or exiting the instrument. Refer to the first
page of this manual for instructions on selecting the correct line voltage and fuse.
GPIB Port
The 24 pin GPIB (IEEE-488) port allows a computer to control the SR865A via the
IEEE-488 instrument bus. The address of the instrument is set in the system menu (hold
the [Calc/
system ] key).
RS-232 Port
The RS-232 interface port is configured as a DCE. The baud rate and parity are set in the
system menu (hold the [Calc/
system
] key). The number of data bits is always 8.
USB Port
The USB port allows a computer to control the SR865A via USB. The SR865A is a Test
and Measurement Class instrument.
Ethernet Port
The Ethernet port allows a computer to control the SR865A via an ethernet network
connection. In addition, the SR865A can serve web pages to the network and stream data
over the network. The network addresses and permissions are configured in the system
menu (hold the [Calc/
system ] key).
The green LED indicates that the unit is connected. The yellow LED is on for a gigabit
connection and off for a 10/100 connection.