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OA 5000 Series User Manual 2 --- 11
Setting the Reference Level
You can set the display of the OA 5000 to reflect the attenuation of the
system rather than just the attenuation provided by the OA 5000. For exam-
ple, if your system insertion loss is 1.55 dB, you could set the reference
value to ---1.55 dB and the attenuation displayed would range from 1.55 dB
to 61.55 dB, instead of 0 dB to 60 dB.
Use the following procedure to set the reference level:
Step 1: Press SET REF so that it is lit (Figure 2-5).
Step 2: Adjust the reference level using the knobs.
Step 3: After setting the reference level, press the SET REF button
again.
DISABLE
MIN ATT
STORE 1 RECALL 1
STORE 2 RECALL 2
REMOTE MODE
SET REF
COARSE
FINE
WAVE-
LENGTH
ADDR
(SET)
This button assigns
the knobs to set the
Reference Level.
Figure 2-5: The Location of the SET REF Button
Once you have set the reference level, you may wish to change the attenua-
tion display mode. To set the display mode so that the reference level is
subtracted from the attenuation provided by the OA 5000, press the MODE
button so that the -- REF indicator is lighted.