Fluke 9100A-017 Manual page 27

• COMMON
System common. This pin should be connected to the UUT
if any of the other pins on this part of the Vector Output I/O
Module are used.
• INT CLK
The internal clock specified by "intclk" in the syncoutput
command is output on this line. The speed of the output
signal on this pin is set to 1, 5, 10, or 20 MHz using the
clockfreq command. The default value for clockfreq is 1
MHz. If a clock other than "intclk" is specified in the
syncoutput command, the signal that is output from this pin
remains the same as the last clockfreq command specified
(or 1 MHz if at default). This output is a free-running
clock.
• DCE
The Data Compare Equal output. When a pattern is pre-
sent on the input pins that is equal to the pattern set using
the compare command or the front panel SET I/O MOD x
COMPARE command, this pin is asserted high. This pin
can be used as hardware notification that a DCE has oc-
curred.
The Vector Output I/O Module common line is fuse protected. If
the line is accidentally connected to a UUT power supply when a
pod is also connected to the UUT, the fuse will blow. If the fuse
is blown, either a message appears on the operator's display or
the TL/1 fault "iomod_fuse_blown" is invoked to indicate that
the fuse needs replacing.
Figure 4-1 shows a block diagram overview of the Vector Output
I/O Module. The output section of the module is further
illustrated in Figure 4-2. A block diagram of one channel of the
receive section of the module is shown in Figure 4-3.
9100A-017
4-3