Bruker IFS 125M, Руководство пользователя, Страница: 69 / 228

69 Bruker Optik GmbH IFS 125M User Manual
Maintenance 6
6.2.2 Quick check in OPUS
1 Check the modulated signals in OPUS:
☞
On the Measure menu, select the Optics
Diagnostics command.
☞ On the Instrument Status dialog click the
Interferometer icon.
☞
On the dialog shown, click the Service
Info button to open the Scanner diagnos-
tics page.
i
Laser A (or B) Amplitude [mV] is the
detected peak-to-peak voltage. Laser A (or
B) Offs [mV] is the detected mean (or DC)
voltage.
For both laser signals applies the following:
• -10,000 < Offs - Ampl/2
Offs + Ampl/2 <10,000
Ampl >2,000
The values are only determined at the current
scanner position, which is usually close to
zero path difference.
2 The laser beam must be properly transferred to the two laser detectors. Nor-
mally, there is no re-adjustment required by the user.
3 The laser amplifier has two gain settings,
which are selected by a corresponding bit in
the EEPROM of the beamsplitter. This kind of
setting can only be accessed via the WEB
interface. Details are described in
chapter 8.3.3
Edit hardware configuration .
If the signal amplitude is too small and the low
gain is in effect (amplifier off), write the high
gain setting permanently into the beamsplitter
(and vice versa).
Table 6.1: Quick check in OPUS