SI-MT/SI-MKB/SI-HTB
WORLD PRECISION IN STRU MENTS
5
Temperature Control Module
–When temperature control is required, the
SI-TCM2
is used. It can control two cuvettes simultaneously, using digital control to maintain
a constant temperature. It has both high and low alarm warnings which can be user
defi ned.
Constant Load Module–
(Not pictured in the unit here.) It is often important to maintain a
constant sarcomere length rather than keep the total length of the preparation constant
during an isometric contraction. For example, if the muscle is fi xed with its tendons, the
muscle contraction elongates these tendons. Even though the distance between the ends
of the muscle is kept constant, the muscle contraction effects an internal shortening of
the sarcomeres of the muscle. In order to get a true isometric muscle contraction, the
sarcomere length must be kept constant during the contraction. For this purpose the
output signal of the camera (
SI-SARCAM
) can be fed into the feedback controlling the
linear motor position using the
SI-COLU
. The feedback system controls the linear motor
so that the sarcomere length is held constant.
Expansion Slots
–Empty slots (not shown) on the back plane are fi lled with expansion
slots which can be replaced at a later time when other modules are added to the system.
Power Switch
–This system has two power switches, one on the back panel and one on
the front. Both switches must be on to power the system.
Back Panel
Master Power Switch
Fuse Housing
Power Connector
Fig. 5 The back panel of the Signal Conditioning Amplifi er System has a master power switch
that is usually left on.
Power Connector
–Insert the power cord into the power connector, and plug the cord into
a standard wall AC outlet.
Fuse Housing
–This housing contains the fuse for the chassis system.
Master Power Switch
–The signal conditioning chassis distributes sub-regulated DC power
(12V) to the individual modules through a backplane of the chassis. For convenience, the
unit has two power switches, and both must be on to power the system. All the modules
power on/off simultaneously. When your system is set up, just leave this power switch in
the on (
I
) position