There are four modes of operation to get “live” results, and
these are:
[L1] & [OFF] Trace is acquired from L1 only, internal
balance circuit used.
[L1] & [L2] Traces are acquired from L1 & L2 for
comparison, internal balance circuit used.
The
DIFF key selects whether both are displayed
or the difference between them is displayed.
[L1-L2] & [OFF] The displayed trace is the difference between
L1 & L2, L2 acts as the balance circuit for L1.
[Xtalk] & [OFF] A pulse is transmitted on L1 and any
reflection is looked for on L2, only L2 is
displayed.
A setup disk changes the stored language via the serial link,
and various user options can be tailored via the CONFIG menu
on the instrument. The download feature allows transfer of the
waveform data to a computer, for analysis and storage for
future reference. Other setting options include changing the
distance units between metres and feet, changing the
propagation velocity units between a ratio and a distance per
microsecond. Display contrast is fully adjustable to compensate
for all viewing conditions. A backlight aids viewing in low
ambient light conditions. Should use of the instrument prove
difficult then on screen, key sensitive help is available.
The batteries to power the instrument are housed in the
compartment on the case back, the cover is held in place with
two screws. The batteries are held in a carrier, which hold the
batteries securely, and allow rechargeable battery packs to be
quickly changed. The instrument can be powered by
manganese-alkali, nickel-cadmium or nickel-metal-hydride
batteries. All cells must be of the same type.
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