HP 8340b User Manual

20-30 Loops
Assembly-Level
Troubleshooting
TROUBLESHOOTING
PHASE LOCK LOOP
2
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CAUTION
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This
instrument contains assemblies
that
are
susceptible
to
damage
from
static electricity. Troubleshoot at
a
workstation
equipped
with
a
grounded anti-static
mat and
wrist
bracelet.
Place
any
removed
assem¬
blies
on
a
anti-static
surface or
inside
an
anti-static
bag.
Verifying the
Operation
of the
A40
PLL2
VCO
1.
Disconnect
the
five
coax
cables
connected
to the
PLL2
VCO:
A43J1
A40J1
A40J2
A40J3
A40J4
2.
Press
[INSTR
PRESET].
Using
a
spectrum
analyzer,
measure
the
locations shown
in the
following
table,
and verify
the
frequency
and
power
at the following
points:
Instrument
State
INSTR
PRESET
INSTR PRESET
INSTR
PRESET
STOP FREQUENCY
=
10.05 MHz
CW MODE
STOP FREQUENCY
=
15
MHz
Measurement
Location
A40J1
A40J2
A40J3
A40J3
A40J3
A40J4
Normal Output
Frequency
(CW)
>150MHz
>300
kHz
>300
kHz
>6MHZ
>300
kHz
>30
Mhz
Normal
Output
Power
(approximate)
-18dBm
-15dBm
-15dBm
-5dBm
-5dBm
0
dBm
HP 8340B/41B
20-30
Loops
Assembly-Level
Troubleshooting

HP 8340b Specifications

General

Brand	HP
Model	8340b
Category	Inverter
Language	English