Self Tests - Stanford Research Systems DS360 Operating Manual And Programming Reference

3-20 Operation
DS360's input data queue. The data is displayed in ASCII hex format, where each
character is represented by 2 hexadecimal digits. The most recently received character is
indicated by the decimal point to the right of the digit. Turning the spin knob to the left
moves the window earlier into the data queue; turning it to the right moves later into the
queue. The display window cannot be moved later than the last character received.
See Chapter 4 on programming for additional information on the RS-232.
Self-Tests
The self tests check out much of the internal circuitry, including the CPU, data memory,
ROM program memory, calibration constants integrity, stored settings integrity, DSP and
DSP memory. The self tests are executed on power-up and take about 3 seconds to run. If
all the self tests pass, the unit will display "tESt PASS" and operate normally. If they
fail, the unit will stop and display an error message. Pressing any key will cause the unit
to attempt to operate normally. Typically the user should power cycle the instrument to
attempt to clear the error. Some errors are transient in nature and will disappear. If the
problems continue, contact Stanford Research Systems for service information.
See the TROUBLESHOOTING section later in this chapter for a list and explanation of
error messages.
DS360 Ultra Low Distortion Function Generator