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Installation
16
Rear Panel Switches
The six-position rear panel switch is shown in the following figure.
Figure 2-3. Rear Panel Switches
Address Switches
Address switches A0 through A4 set the primary GPIB address. The address is set in binary, A0 being the least significant
bit and A4 being the most significant bit. Figure 2-3 shows the factory-set address of "5" (binary 00101). Any address from
decimal 0 to decimal 30 is a valid GPIB address. Refer to the following diagram for switch settings.
Address Switch Positions Address Switch Positions Address Switch Positions
A4 A3 A2 A1 A0 A4 A3 A2 A1 A0 A4 A3 A2 A1 A0
0 0 0 0 0 0 10 0 1 0 1 0 20 1 0 1 0 0
1 0 0 0 0 1 11 0 1 0 1 1 21 1 0 1 0 1
2 0 0 0 1 0 12 0 1 1 0 0 22 1 0 1 1 0
3 0 0 0 1 1 13 0 1 1 0 1 23 1 0 1 1 1
4 0 0 1 0 0 14 0 1 1 1 0 24 1 1 0 0 0
5 0 0 1 0 1 15 0 1 1 1 1 25 1 1 0 0 1
6 0 0 1 1 0 16 1 0 0 0 0 26 1 1 0 1 0
7 0 0 1 1 1 17 1 0 0 0 1 27 1 1 0 1 1
8 0 1 0 0 0 18 1 0 0 1 0 28 1 1 1 0 0
9 0 1 0 0 1 19 1 0 0 1 1 29 1 1 1 0 1
30 1 1 1 1 0
Frame Mode Switch
The frame mode switch determines the IEEE 488 secondary addresses (also referred to as subaddresses) of the modules that
are installed in the mainframe. The frame mode switch must be set to MAIN when the mainframe is connected directly to
the GPIB. With the frame mode switch set to MAIN, modules are assigned secondary addresses of 0 to 7, which
corresponds to the slot locations indicated on the mainframe.
The frame mode switch must be set to AUX (auxiliary) when the mainframe is serially-linked to another mainframe that is
directly connected to the GPIB. This also applies when the mainframe is serially linked to an Agilent 603xA/664xA/665xA/
667xA power supply that is directly connected to the GPIB.
In mainframes that have the frame mode switch set to AUX, modules are assigned secondary addresses of 8 to 15.
Secondary address 8 corresponds to slot location 0 on the mainframe and secondary address 15 corresponds to slot location
7 on the mainframe as shown in the following diagram.