Quantum Instruments Cascade Laser Starter Kit manual TPG128 main board

Starter Kit Instruction Manual Maintenance 44

[5]Choose the range 5 µs to 105 µs. Pot 10 turns Period on 10. Adjust the adjustable capacitor max 105 µs adj (4) in order to obtain a 105 µs long period.

[6]Pot 10 turns Period on 0. Ajust the pot Period min adj (1) in order to have a period of 5 µs.

[7]Repeat steps 5) and 6) in order to obtain 105 +/- 1 µs and 5 +/- 0,1 µs for the two settings of the pot Period.

[8]Choose the range 0.2 µs to 2.2 µs. Pot

10 turns Period on 10. Adjusts the capaci- tor max 2,2 µs adj (2) in order to obtain a period of 2.2 µs.

[9]10 turn pot Period on 0. Check that the period is 200 ns. If it is not the case, re-adjust the pot 50 ns adj (5) in order to obtain 200 +/-20 ns. (In general, it is not possible to go below 210 ns).

[10]Choose the range 0.5 µs to 10.5 µs. Pot 10 turn Period on 10. Adjust capacitor max 10,5 µs adj (3) in order to have a period of 10,5 µs.

[11]Pot 10 turns Period on 0. Check the period is 0.6 +0/-0.1 µs.

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Fig.35: TPG128 main board