270M
Rapid
Scanning Imaging Spectrograph
Each device is associated with a high or low level. The table below lists state counter,
device and SELECT signal relationships.
Counter
State Name
Device Type
SELECT INDEX
state O
WAVELENGTH STATE
Drive Motor low low
state 1
FRONT ENT SLIT
1/2
step
high
high
state 2
FRONT-EXIT-SLIT 1
/2
step
low high
state 3
DEVICE 3 Not Implemented high
high
state 4 IDLE STATE
None low
high
state 5
ENTRANCE MIRROR
DC
Motor
high
high
state 6 TURRET
DC
Motor low high
state 7 FRONT ENT SHUTTER Binary high high
state 8 DEVICES
Not Implemented low
high
state 9 SIDE ENT SLIT
1/2
step
high
high
state 10
SIDE-EXIT-SLIT
1/2
step
low high
state
11
DEVICE 11-Not Implemented
high high
state 12
DEVICE
12
Not Implemented low high
state 13 EXIT
MIRROR
DC
motor high
high
state 14
SPARE
DC
Motor
DC
Motor low high
state 15 ENT SHUTTER 2 Binary high high
-
•
DIRECTION
The DIRECTION signal is an input to the 270M Controller Card which is used
to
control the direction .
of
movement for the selected device. This line may be left high
or
low during transitions between devices, but should be asserted
to
the appropriate level
at least 500 ns before any
STEP
pulses are made.
The wavelength drive motor, DC motor and half-step (slit} motor drivers are provided
with jumper options
to
determine the direction of rotation for a high
or
low
DIR
input
signal. The shutters require a tow
DIR
signal
to
open a shutter and a high
DIR
to
close
it.
•
STEP
This line should be kept HIGH
(1)
and activated by asserting it LOW and then HIGH.
The negative (low going} edge. initiates the step
or
switching action.
This signal is used
to
generate step pulses for the wavelength motor and slit stepper
16
Revised November
24.
1992
Leica Microsystems, Inc.'s Ex. 1033
To Next Page
Loading...