THORLABS ELL8 Series Manual page 3

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Mechanical Drawings of the
Rotation Stage
As is shown in the above drawing of the rotation
stage, the spacing and threading of the 37 mounting
holes in the stage differs between the
imperial (ELL8K) and metric (ELL8K/M) versions of
the stage. All other dimensions, including the 1.97"
(50.0 mm) diameter of the stage are the same for
both. The board is functionalized with four Ø0.17"
(Ø4.2 mm) through holes, which accept the included
6-32 x 1/4" (M3 x 6 mm) screws and are used to
attach the mounting brackets.
Encoder Resolution (Relative Magnetic Encoder)
Backlash
e
Deflection Under Load
f
Maximum Total Load
g
Minimum Lifetime
Electrical
Motor Type
DC Voltage Input
Typical Current Consumption, During Movement
Typical Current Consumption, During Standby
Communications
i
Bus
Connector on Rotation Stage Board
Connectors on Interface Board
Speed
Data Length (1 Stop Bit, No Parity)
Protocol Data Format
Module Address and Command Format
8-Conductor Ribbon Cable Length (Supplied)
8-Conductor Ribbon Cable Length (Maximum)
Mechanical
Mounting Threads (On Stage, 37 Places)
Dimensions of the Rotation Stage Board
(Without Brackets)
Dimensions of the Rotation Stage Board
(With Brackets)
Dimensions of the Interface Board
Weight of Rotation Stage Board (Without Brackets)
Weight of Rotation Stage Board (With Brackets)
Weight of the Brackets and Stage and Interface Boards
Environmental Operating Conditions
Temperature Range
Maximum Relative Humidity (Non-Condensing)
Maximum Altitude
Performance specifications are given for the case when the rotation stage is mounted as
Travel is not limited.
Homing is performed using a combination of reflecting optical and magnetic sensors. For
details, please see the Operation tab or Sections 2.1 and 3.1.1 of the manual.
For a tip pushed against the vertical side of the stage, the TIR is the total measured
Deflection Due to Finite Compliance of Structure and Bearings of the Stage
The rotation stage is mounted in the horizontal plane.
The rotation stage is not designed for continuous operation.
The number of revolutions is computed using a diameter of 53 mm, which includes the
thickness of the track.
i. Use two 10 kΩ pull-up resistors in multi-drop mode for RX/TX.
8.0 µrad/kg (1.65 arcsec/kg)
600,600 Revolutions
Multi-Drop 3.3 V/5 V TTL RS232
[For Plug with Ø5.5 mm OD (Ground) and
M4 x 0.7 (Metric Version)
(81.0 mm x 60.0 mm x 20.2 mm)
3.19" x 3.72" x 0.84" (Imperial Version)
81.0 x 86.4 x 21.4 mm (Metric Version)
(32.0 mm x 66.0 mm x 12.5 mm)
15 to 40 °C (59 to 104 °F)
recommended in the Operation tab.
displacement during a full rotation.
262144 counts/rev
(24.0 µrad/count)
(0.0014°/count)
Zero
0.200 kg (0.441 lbs)
h
(100 km)
Elliptec Resonant Piezo
4.5 to 5.5 V
800 mA
50 mA
®
Picoflex
®
Picoflex
Micro-B USB
5 VDC Power:
Ø2.1 mm ID (+5 V)]
9600 baud
8 bit
ASCII HEX
Mnemonic Character
0.250 m
3 m
8-32 (Imperial Version)
Length: 0.24" (6.0 mm)
3.19" x 2.36" x 0.80"
1.26" x 2.60" x 0.49"
0.176 lbs (0.08 kg)
0.198 lbs (0.09 kg)
0.220 lbs (0.10 kg)
<80% at 31 °C
2000 m