Agilent Technologies 8753ET Service Guide

Chapter 10 10-37
Service Key Menus and Error Messages
Service Key Menus
Node 24 2nd LO
Perform step A12 and then press
.
This node counts the 2nd LO used by the sampler/mixer assemblies to produce the 2nd IF
of 4 kHz. As you vary the frequency, the counter reading should change to values very close
to those indicated below:
Node 25 PL Ref (phase lock reference)
Perform step A12 and then press
.
This node counts the reference signal used by the phase comparator circuit on the A11
phase lock assembly. As you vary the frequency, the counter reading should change as
indicated below:
Node 26 Ext Ref (rear panel external reference input)
Perform step A12 and then press .
The voltage level of this node indicates whether an external reference timebase is being
used:
• No external reference: about −0.9 V
• With external reference: about −0.6 V
Frequency Entered Counter Reading
0.03 to 1 MHz (frequency-entered) +4 kHz
1 to 16 MHz not accurate
16 to 3,000 MHz 996 kHz
Frequency Entered Counter Reading
0.3 to 1 MHz frequency entered
1 to 16 MHz not accurate
16 to 3,000 MHz 1 MHz
Meas
ANALOG IN
24 x1
COUNTER: ANALOG BUS
Sweep Setup
CW FREQ
Meas
ANALOG IN
25 x1
COUNTER: ANALOG BUS
Sweep Setup
CW FREQ
Meas
ANALOG IN
26 x1

Agilent Technologies 8753ET Specifications

General

Brand	Agilent Technologies
Model	8753ET
Category	Measuring Instruments
Language	English