Agilent Technologies HP 8719D Service Manual page 287

Analog In Menu
Select this menu to monitor voltage and frequency nodes, using the analog bus
and internal counter, as explained below.
To switch on the analog bus and access the analog in menu, press:
The RE%KU'TXO~ fLQfl key toggles between low and high resolution.
Resolution
Caution
To prevent damage to the analyzer, first connect the signal to
the rear panel AUX INPUT, and then switch the function ON.
Note
OUTPCNTR is the HP-IB command to output the counter's
frequency data.
Service Key Menus and Error Messages
allows you to monitor the analog bus nodes (except nodes
1, 2, 3, 4, 9, 10, 12) with external equipment (oscilloscope,
voltmeter, etc). To do this, connect the equipment to the
AUX INPUT BNC connector on the rear panel, and press
switches the internal counter off and removes the counter
from the display. The counter can be switched on with one
of the next three keys. (Note: Using the counter slows the
sweep.) The counter bandwidth is 16 MHz unless otherwise
noted for a specific node.