A9 Output Board - Agilent Technologies ESG-D Series Service Manual

A9 Output Board

NOTE:
Test Conditions
PRESET; 0 dBm; RF On; No Modulation
PRESET; 0 dBm; RF Off; No Modulation
PRESET; 20 dBm; RF On (Unleveled)
Frequency Set to heterodyne Band;
PRESET; Frequency  249.9 MHz; 0 dBm;
RF On; No Modulation
+5.0 Vdc applied to Q INPUT:
PRESET; 0 dBm; RF On; I/Q On; I/Q
Source EXT I/Q; I Input = No Connection;
Burst Envelope On; If 0.5Vdc is applied to
Q INPUT, the Q node changes to negative
voltage
+1 Vdc Applied to EXT 1 INPUT:
PRESET; 0 dBm; RF On; AM On;
AM Depth 100%; AM Source Ext 1 DC
The node voltages given in the following table are approximate values based on a sample
of signal generators. Your signal generator may not reflect these exact values. Additionally,
the resolution of these values varies from node to node. As a guideline, interpret your
measurements based on the number of decimal places shown for the expected voltage.
A9 Output Board Abus Nodes (1 of 2)
0.7
0.1
20
0.4
0.9 (20
w/ no Q
Input)
Assembly-Level Troubleshooting with Block Diagrams
Node Voltages (Corrected Values in Vdc)
19 0.08
19
0.0
19 0.4
19 0.05
4.8 0.08
(0.1 w/
no Q
Input)
A9 Output Board
1.2 0.5 1
1.2 0.5 10
0.4 1 12
1.1 0.3 0.0
1.3
(12 w/
no Q
Input)
8.5 to
9.9
8.5 to
10.9
8.5 to
10.9
2-5