BL19LXU/BL29XUL APD Manual

[setup]
1. Connect HV, +12V, SIG.
2. Apply +12V.
3. Connect SIG to an oscilloscope (50 ohm, 50 mV, 10 ns).
4. Apply HV slowly (100V/10s) upto the voltage indicated on the APD.
5. Check noise level.
6. Beam on.
7. Read signal level.
8. Setup discreminator (typically -1.0 V, 10 ns)
    [threshold voltage is 10 times larger than the actual.]

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