2-10
Assembly-Level Troubleshooting with Block Diagrams
A11 Reference Board
1 Vpp @ 1 kHz Applied to EXT 1 INPUT:
PRESET; AM On; AM Depth 100%;
AM Source Ext 1 AC
0.00 1.9 2 to 4 < 0.5 < 0.5 2.0 0.0
1 Vpp @ 1 kHz Applied to EXT 2 INPUT:
PRESET; AM On; AM Depth 100%;
AM Source Ext 2 AC
0.00 0 2 to 4 < 0.5 7.5 0 0.0
A11 Reference Board Abus Nodes
Test Conditions
Node Voltages (Corrected Values in Vdc)
MOD1_OUT
MOD2_OUT
VTUNE
MOD1_PK
MOD2_PK
LIN_AM
1GHZ_DET
FM_MOD