Self Tests - Stanford Research Systems SR850 User Manual

1. Self Tests

The self tests check the lock-in hardware. These are functional tests and do not relate to the specifications.
These tests should be run before any of the performance tests.
Note that the Hardware Test menu offers more tests than are required here. Only those tests which require no
additional equipment are discussed in this section. The computer interface and disk drive tests are not
required but should be periodically checked. See the System Setup menu for more information about those
tests.
Setup
No external setup is required for this test.
Procedure
1) {PRESET} (Turn on the lock-in with the [ ] key pressed)
At power up, the RAM, ROM, CLK and DSP tests should all be OK.
2) Press the keys in the following sequence:
[SYSTEM SETUP]
<Hardware Test>
<Keypad Test>
<Knob Test>
<More>
<Memory Test>
3) This completes the functional hardware tests. Enter the results of this test in the test record at the end
of this section.
Press all of the front panel keys until all of the boxes on the screen are filled in.
Then press any key to exit this screen.
<Speed 2>
Rotate the knob to verify rotation and direction.
<Return>
<Main Mem>
<Begin Test>
All of the main memory chips should Pass.
<Return>
<Video Mem>
<Begin Test>
All of the video memory chips should Pass.
<Return>
<Return>
Performance Tests
7-5