66 Chapter2
Making Adjustments
7. Log and Linear Amplifier
Figure 2-12 Log and Linear Amplifier Adjustment Location
12.Set the synthesizer amplitude 60 dB below that recorded in step 8 by
pressing
AMPLITUDE and then pressing ⇓ (step-down key) six times.
Adjust A14R10 OFFSET for the DMM reading of 250 mV ±1mV.
13.Repeat step 10 and step 11 until no further adjustment is necessary.
14.Set the synthesizer amplitude 30 dB below that recorded in step 8
and adjust the A14R23 SLOPE for a DMM reading of 625 mV ±1mV.
15.Set the synthesizer amplitude to the level recorded in step 8 and
adjust the A14R69 −30 dB for a DMM reading of 1000 mV ±1mV.
16.Repeat step 13 and step 14 until no further adjustment is necessary.
17.Set the synthesizer amplitude 10 dB below that recorded in step 8
and adjust the A14R23 SLOPE for a DMM reading of 875 mV ±1mV.
18.Set the synthesizer amplitude to the level recorded in step 8 and
adjust the A14R39 −10 dB for a DMM reading of 1000 mV ±1mV.
19.Repeat step 16 and step 17 until no further adjustment is necessary.
20.Repeat step 10 to step 18 until the limits in Table 2-3 are met.
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