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Getting Started
Getting Acquainted with the Analyzer
NOTE
When using the knob to change frequency or amplitude settings, the trace data is shifted. Therefore,
when using
MAX HOLD A, MAX HOLD B
, or
MIN HOLD
C , moving the center
frequency with the knob will not simulate a drifting signal.
Number/Units Keypad
The number/units keypad allows entry of exact values for many of the cable
TV analyzer functions. You may include a decimal point in the number
portion. lf not, the decimal point is placed at the end of the number.
Numeric entries must be terminated with a units key. The units keys change
the active function in a manner prescribed by that function. For example, the
units keys for frequency span are
(GHz),
m,
m,
and
IHz],
whereas the
units for reference level are
CWl,
1-1,
Imv),
and
@.
Step Keys
If an entry from the number/units keypad does not coincide with an allowed function value
(for
example, that of a 12 MHz bandwidth], the cable TV analyzer defaults to the nearest allowable value.
The step keys allow discrete increases or decreases of the active function
value. The step size depends upon the cable TV analyzer measurement range
or on a preset amount. Each press results in a single step change. For those
parameters with fixed values, the next value in a sequence is selected each
time a step key is pressed. Changes are predictable and can be set for some
functions. Out-of-range values or out-of-sequence values will not occur using
these keys.
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