HP 70000 series - Page 315

User
Application
Errors
0001
{
0999
0039
Log amplifier
Cause: The log amplier of the HP 70903A IF section is not functioning correctly.
Cure: Perform the HP 70903A IF section log amplier adjustment. If this does not remedy the
problem, refer to the HP 70903A IF section Service Manual for procedures to repair the log
amplier
.
0040
Tune+Span
Cause: The Tune + Span level is incorrect or the system cable is missing.
Cure: Check to ensure the Tune + Span cable is connected from the HP 70900B local oscillator
source LO to all modules that require it. SMB tee adapters may be required to daisy-chain this
signal.
0041
RF
attenuator
Cause:
The
HP
70907A/B
external
mixer
interface
module
internal
attenuator
is
not
functioning
correctly
.
Cure:
T
est
and,
if
necessary
,
replace
the
HP
70907A/B
external mixer interface module input
attenuator
.
*0042
Cal/I.F.
cables?
Cause:
The
front
panel
CALIBRA
TOR
output
of
the
HP
70900B local oscillator source is not
connected
to
the RF INPUT of the RF section (a prerequisite for running the program), or the
rear
panel
21.4 MHz output of the RF section is not connected to the IF Section.
Cure:
The
marker reading was less than 0 60 dBm and the RF section 21.4 MHz diagnostic
detector
indicated
a low signal condition. This could be caused by no calibrator signal applied
to the RF section input, no 21.4 MHz cable connected to the RF section rear panel 21.4 MHz
output, or a defective RF section. Check for these conditions to remedy the problem.
*0043
Problem/ampl low?
Cause: The signal amplitude of the RF section is too low
. The marker reading was less than
0 20 dBm but greater than 0 60 dBm and the RF section 21.4 MHz diagnostic detector indicated
a low signal condition. The program stops testing when this error is generated.
Cure: This could be caused by no 21.4 MHz cable connected to the RF section rear panel
21.4 MHz output, or excessive loss in the signal path of the RF section. Check for these
conditions to remedy the problem.
6-8 Error Messages