DS335 Synthesized Function Generator
DS335 Synthesized Function Generator
DS335 Synthesized Function Generator
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Troubleshooting 4-1<br />
TROUBLESHOOTING<br />
If Nothing Happens on<br />
Power On<br />
Make sure that the power entry module on the rear panel is set for the proper<br />
ac line voltage for your location, that the correct fuse is installed, and that the<br />
line cord is inserted all the way into the power entry module. The selected<br />
line voltage may be seen through the clear window, just below the fuse.<br />
When the unit is plugged in and turned "ON", the unit's firmware version<br />
number and serial number will be briefly displayed. Then the self tests should<br />
execute.<br />
Cold Boot<br />
ERROR MESSAGES<br />
Operational Errors<br />
Message<br />
AC Error<br />
AC-DC Error<br />
Freq Error<br />
No GPIB<br />
No RS232<br />
Off Error<br />
Out q err<br />
Range Er<br />
Rate Err<br />
Rcl Err<br />
Span Err<br />
StrtF Er<br />
Stop F Er<br />
If the unit displays no sensible message, the "cold boot" procedure may fix<br />
the problem. To do a "cold boot", turn the unit off. Then, while holding the<br />
"+/-" button, turn the unit "ON". This procedure initializes the RAM and recalls<br />
all factory calibration values.<br />
The following lists explain all of the error messages that the <strong>DS335</strong> can<br />
generate. The messages are divided into operational errors, errors in using<br />
the instrument, and self-test errors. The messages are listed alphabetically.<br />
These error messages may appear during normal front panel operation and<br />
generally are warnings of illegal parameter entries.<br />
Meaning<br />
Amplitude entered is out of allowable range.<br />
The output |V ac | + |V dc | > 5V. Adjust either the offset or amplitude.<br />
Attempt to set output frequency outside of range allowed for current function,<br />
≤ 0 Hz or > 3.1 MHz, or attempting to set frequency for NOISE function.<br />
Cannot access GPIB menus if option board is not installed.<br />
Cannot access RS232 menus if option board is not installed.<br />
DC output offset outside of ±5V range (into 50Ω).<br />
Output queue error. The <strong>DS335</strong> output queue is full due to too many queries<br />
that have not been read back.<br />
Parameter in command is out of allowed range for that command.<br />
Sweep rate out of range (0.01 Hz to 1kHz).<br />
Parameter memory corrupt on power up, stored setting corrupt. Not a worry<br />
unless this error occurs frequently. Check the battery if so.<br />
Logarithmic sweep span error. The start and stop frequencies are apart by<br />
more than six decades.<br />
The sweep start frequency is out of range ( 0 < Freq ≤ max for function).<br />
The sweep stop frequency is out of range ( 0 < Freq ≤ max for function).<br />
<strong>DS335</strong> <strong>Synthesized</strong> <strong>Function</strong> <strong>Generator</strong>