Specifications

MAC 5000

Overview

The DCFWSHC DC servo lter changer module offers high performance,

reliable lter changing. Software compatible with STFWSHC stepper motor lter

changer module, two lter wheels and up to three electronic shutters are sup-

ported. The high speed controller utilizes a digital signal processor to control the

closed loop DC servo motor. The result is a high speed lter change with a care-

fully controlled acceleration prole to minimize vibration.

Ordering Information

73005081 ..........................................DC Servo High Speed Filter/Shutter Control Module

99A350 ............................................Single Ten Position 25/32mm DC Servo Filter Wheel

99A351 ................................Single Six position 25 mm DC Servo Filter Wheel w/o Shutter

• Supports two

lter wheels

either as two

independent

singles or a

single dual lter

wheel

• Operates up to

three electronic

shutters

• Electronic

synchronization

features

• Front panel

controls for

manual operation

• LED indication of

shutter state

I/O Connections

Two connectors are designated to connect to lter wheel 1 and 2. They are

similar with the exception of the shutter connections. Filter wheel 1 has connec-

tions for shutter 1 and 3, while lter wheel 2 has connections for 2 and 3.

The SYNC-OUT-IN Mini-DIN connector supports the lter wheel sychro-

nization control signals. The open collector synchronization output is available

to gate external devices when the lter wheel has reached its target position. The

TTL synchronization input can be used to sequence the lter wheel through a

list of pre-dened lter positions without host computer interaction. By using a

combination of the input and output synchronization signals the lter wheel can

be effectively slaved to other data acquisition equipment.

Specications

Speed ......................... selectable and programmable, up to 30ms between adjacent lters

Change algorithm ................................................. computed shortest path to selected lter

Shutter modes ...........................................................timed, automatic or manual exposure

High Speed Filter Wheel Module