Tektronix 1503C, User Manual, Page: 68 / 128

Options and Accessories
3–2
1503C MTDR User Manual
coaxial cable and the station as well as housing the electronics that detect carrier
signals and recognize the collision of two signals.
Taps are what the transceivers are attached to.
A bridge connects several network segments. Depending on the hardware used
(e.g., fiber optics), a network might extend up to 22,000 meters.
Repeaters are used to increase the effective length of a cable to allow more
transceivers. Due to distance limitations, two transceivers can have a maximum of
two repeaters between them.
Servers let a network share resources, such as terminals, disks, printers, etc.
The 1503C with Option 06 allows testing of an Ethernet bus while the network is
active. This is important because some installations might be interactive with other
installations that are dependent on the Ethernet. Physically, Option 06 is a
piggyback circuit board attached to the Sampler/Pulser board in the 1503C. A
special EPROM replaces the standard EPROM on the main board, allowing Option
06 to be transparent to the standard instrument, but accessible through the Ethernet
Menu and the Setup/Acquisition Menu.
Option 06 performs three functions:
H
a 50 terminator for the network
H
Generates a DC signal that emulates the -1.05 VDC carrier signal
H
Generates a DC signal that emulates the -1.7 VDC collision signal.