7-12
Adjustments
Manual Adjustments
AM Level (8648B/C/D Only)
(Not used for serial prefixes ≥ 3847A/3847U)
Description
This adjustment adjusts AM level accuracy on the output module. It uses the DVM to
measure the dc voltages that are being adjusted on the output module.
Required Test Equipment
• Function Generator
•DVM
• J31 Test Point Extender (refer to the “Test Point Extender” section at the front of this
chapter)
Procedure
Figure 7-9. AM Level Test Setup 1
Figure 7-10. AM Level Test Setup 2