Newport New Focus 3502, Руководство пользователя

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30
3.6
Back Panel Operation
The back panel of 3502 Optical Chopper Controller provides the functions
operation described below.
Figure 15: Model 3502 Optical Chopper Controller back panel.
CAUTION
Do not block the rear panel of the Controller. Ensure a minimum
clearance of 30” for adequate ventilation of the device. Blocking the
normal convective airflow around the unit, or thermally insulating the
unit, can result in severe injury, damage to the product, and/or fire.
OUT 1
The function of the OUT 1 output depends on the instrument’s operating mode.
In H/S mode, the instrument provides a TTL-level signal at frequency
(H/S)·F
sync
. In +/- mode the frequency at OUT 1 is F
outer
- F
inner
, and in NORMAL
mode the frequency is 5·F
outer
. This information is also summarized in Table 2
on page 29.
OUT 2
The function of the OUT 2 output depends on the instrument’s operating mode.
In H/S mode, the instrument provides the user with a TTL-level signal at
frequency [H/(7·S)] ·Fsync. In +/- mode the frequency at OUT 2 is F
outer
+F
inner
.
In NORMAL mode the frequency is F
inner
. This information is also summarized in
Table 2 on page 29.
V
ext
The V
ext
BNC input connector can be used to supply an external 0 to -10 V DC
voltage. When the Sync setting is V
ext
, the user may drive the Chopper motor
directly with this input DC voltage. In this case, 0 to -10 V DC corresponds to 0
to 100% of the highest motor speed, respectively.