Checking The External Alc For Option 010 Or 011 - Agilent Technologies 8590L Service Manual

20. Checking the External ALC for Option
010 or 011
This adjustment applies to:
8590L spectrum analyzers, Option 010 or 011
8591E spectrum analyzers, Option 010 or 011
8591C cable TV analyzers, Option 011
External automatic level control (ALC) operation is verified by
measuring the power necessary to level the tracking generator at a
source power of 0 dBm and −34 dBV. There are no specifications for this
adjustment. The limit set for verification is ±0.75 dBV.
Note that if the analyzer does not pass this procedure, or if the factory
correction constants are not available, perform the "Correcting for
External ALC Error for Option 010 or 011" procedure in this chapter.
Equipment Required
Digital multimeter (DMM)
Power meter
Power sensor, 1 MHz to 350 MHz
Cable, BNC (m) to dual banana plug
Cable, BNC, 122 cm (48 in)
Cable, BNC, 23 cm (9 in)
Adapter, BNC Tee
Adapter, Type N (m) to BNC (f) (two required)
Additional Equipment for Option 011
Power sensor, 75 Ω
Cable, BNC, 75 Ω
Adapter, 75 Ω, Type N (f) to BNC (m)
Chapter 2

20. Checking the External ALC for Option 010 or 011

Making Adjustments
131