Error messages and troubleshooting
R&S
®
ZNB/ZNBT
1530
User Manual 1173.9163.02 ─ 62
Error
Description
Remedy
Bit no.*)
Unstable level con-
trol at port <i>
The analyzer detects an excessive source level at
one of the ports. The signal is turned off and the
sweep halted.
Check signal path for the wave a
i
,
especially check external compo-
nents. Then press "Channel > Sweep
> Sweep Control > Restart Sweep".
9
Problem concern-
ing external gener-
ator Gen<i>
An external generator has been configured, how-
ever, it cannot be controlled or provides error mes-
sages. If several generators cause problems, the
lowest number is indicated.
Check whether the generator is prop-
erly connected and switched on.
Check the GPIB address; exclude
address conflicts when using several
external generators or other equip-
ment.
10
Problem concern-
ing external power
meter Pmet<i>
An external power meter has been configured, how-
ever, it cannot be controlled or provides error mes-
sages. If several power meters cause problems, the
lowest number is indicated.
Check whether the power meter is
properly connected and switched on.
Check the GPIB address; exclude
address conflicts when using several
external power meters or other equip-
ment.
11
Time grid too close The sweep points for a time sweep are too close,
the analyzer cannot process the measurement data
until the next sweep point starts.
Increase stop time, reduce no. of
points, increase IF bandwidth. If pos-
sible reduce number of partial mea-
surements, e.g. by restricting the
number of ports measured.
12
Overload at DC
MEAS <range>
The input voltage at one of the DC input connectors
on the rear panel is too high.
Reduce input voltage.
13
Port <i> output
power unleveled
The level control is unsettled or unstable, possibly
due to an external disturbing signal.
Change generator level at the port;
check external components.
2
*) The following bits in the
STATus:QUEStionable:INTegrity:HARDware
register
are set when the error occurs.
9.2
Errors during firmware installation/update
During firmware installation or update, if the installer encounters an error, the update is
canceled and the analyzer firmware is rolled back to its previous state.
Currently there is only one exception to this rule, which was implemented to recover
gracefully from a failed FPGA update:
Errors during firmware installation/update
