f. Using the TLP.

Example 1: The TLP at jack J1 is taken as zero (0 dbm0).

Reading downward

under J1 it is evident that the relative level at J2 is +10 dbm0,

and at J3 it is +6 dbm0. The actual levels at jacks J2 and J3 will

therefore be -2 dbm and -6 dbm, respectively.

Example 2: Assume that the level is -2 dbm at TLP (J2) in bay 2.

What are the actual levels at jacks J1 and J3?

The relative levels at J1 and J3 will be -10 dbm0 and -4 dbm0,

respectively. The actual levels at J1 and J3 will be -12 dbm and -6

dbm, respectively.

Example 3: Assume that the level is -6 dbm at TLP (J3) in bay 3.

What are the actual levels at jacks J1 and J2?

The relative levels at J1 and J2 will be -6 dbm0 and 44 dbm0,

respectively. The actual levels at J1 and J2 will be -12 dbm and -2

dbm.

Example 4: Assume that the TLP is at jack J1 with normal level of -12 dbm.

Since this is the TLP, the two values are related: -12 dbm = 0 dbm0.

Now suppose the input signal drops to a level of -18 dbm. What is

the relative level?

The level of -18 dbm is 6 db below the reference level at TLP, and

is therefore quoted as -6 dbm0.

Example 5: Assume that the TLP is at J2 with normal signal level of -2 dbm.

Assume further, that the maximum relative noise at this point in the

circuit is established at -40 dbm0. What is the actual noise level?

40 db below -2 dbm is -42 dbm. That is the actual noise level.

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