Agilent Technologies 8719ET Service Manual page 277

8719ET/20ET/22ET
8719ES/20ES/22ES
RF Network Analyzers
A11 Phase Lock
5. A11 Gnd (Ground reference)
6. A11 Gnd (Ground reference)
7. A11 Gnd (Ground reference)
8. Swp Err (Phase error voltage)
This node measures the voltage at the output of the phase comparator on the A11 phase
lock assembly. This error voltage corresponds to the difference in frequency between the
divided IF and the 1 MHz reference frequency from the A12 assembly. See
for a typical display.
Figure 10-4 Node 8: Swp Err, Phase Error Voltage
Service Guide
Service Key Menus and Error Messages
Analog Bus on OFF
Figure 10-4
10- 23