MI-6910 Family of Vertical Planar Scanners

MI-6910

downloadpdfThe MI-6910 Family of Vertical Planar Scanners offers scan dimensions from 3 to 80 ft (0.9 to 24.4 m) and can be configured with a variety of options to improve accuracy, increase automation and simplify operation. When combined with our closed-loop position control solutions, the MI-6910 scanner offers industry-leading uncorrected position accuracy of better than 0.002 inches (0.05 mm). These scanners are manufactured with quality, state-of-the-art features and are designed to employ Z-axis correction if required. All of the standard sizes shown here can be adjusted to fit an exact scanning solution to any unique needs.

 

  • Scan lengths 3 to 80 ft (0.9 to 24.4 m)
  • Closed-loop position encoders ensure position repeatability and accuracy
  • Rugged, practical mechanical design maintains alignment stability and exceptional dynamic planarity
  • Modular design meets present and future measurement requirements

Specifications

Model (MI-6910) 3x3 5x5 8x8 10x8 10x10 12x10 12x12 20x10 16x16 23x22 30x30 80x40
Scan Area
Horiz. x Vert.
ft. (m.)
3x3
(.9x.9)
5x5
(1.5x1.5)
8x8
(2.4x2.4)
10x8
(3x2.4)
10x10
(3x3)
12x10
(3.7x3)
12x12
(3.7x3.7)
20x10
(6.1x3)
16x16
(4.9x4.9)
23x22
(7x6.7)
30x30
(9.1x9.1)
80x40
(24.4x12.2)
Recommended Frequency Range
Low
3.3 2.2 1.12 1.12 0.96 0.96 0.96 0.75 0.96 0.75 0.49 0.49
High1
110 110 60 60 60 40 40 40 40 40 40 40
Planarity
Uncorrected
inches rms
(mm rms)
0.002
(0.05)
0.002
(0.05)
0.003
(0.08)
0.003
(0.08)
0.003
(0.08)
0.004
(0.10)
0.004
(0.10)
0.004
(0.10)
0.004
(0.10)
0.004
(0.10)
0.004
(0.10)
0.006
(0.15)
Corrected
inches rms
(mm rms)
0.001
(0.03)
0.001
(0.03)
0.001
(0.03)
0.001
(0.03)
0.001
(0.03)
0.002
(0.05)
0.002
(0.05)
0.002
(0.05)
0.002
(0.05)
0.002
(0.05)
0.002
(0.05)
0.003
(0.08)
Accuracy
X-Axis
inches rms (mm rms)
0.003
(0.08)
0.003
(0.08)
0.004
(0.10)
0.004
(0.10)
0.004
(0.10)
0.006
(0.15)
0.006
(0.15)
0.006
(0.15)
0.008
(0.20)
0.008
(0.20)
0.008
(0.20)
0.008
(0.20)
Y-Axis
inches rms (mm rms)
0.003
(0.08)
0.003
(0.08)
0.004
(0.10)
0.004
(0.10)
0.004
(0.10)
0.006
(0.15)
0.006
(0.15)
0.006
(0.15)
0.008
(0.20)
0.008
(0.20)
0.008
(0.20)
0.008
(0.20)
Z-Axis
inches (mm)
±0.01
(±0.3)
±0.01
(±0.3)
±0.02
(±0.5)
±0.02
(±0.5)
±0.02
(±0.5)
±0.03
(±0.8)
±0.03
(±0.8)
±0.03
(±0.8)
±0.03
(±0.8)
±0.03
(±0.8)
±0.03
(±0.8)
±0.03
(±0.8)
Roll Axis (deg) ±0.05 ±0.05 ±0.05 ±0.05 ±0.05 ±0.05 ±0.05 ±0.05 ±0.03 ±0.03 ±0.03 ±0.03
Scan Speed
X-Axis
in/sec
(cm/sec)
15 (38) 15 (38) 15 (38) 15 (38) 10 (25) 10 (25) 10 (25) 10 (25) 10 (25) 10 (25) 10 (25) 10 (25)
Y-Axis
in/sec
(cm/sec)
15 (38) 15 (38) 15 (38) 15 (38) 10 (25) 10 (25) 10 (25) 10 (25) 10 (25) 10 (25) 10 (25) 10 (25)
Z-Axis Travel 0, 6 in (15 mm), 12 in (30 mm). See option table.
Roll Axis Travel
Manual -95° to +95°. Detents to indicate -90°, -45°, 0°, 45°, 90°.
Motorized 0-360° continuous with rotary joint. -140 to +190 travel with limit switches
Motorized Roll Capacity Standard: 40 lbs (18.1 kg) or 13 ft-lbs (17.6 N-m)
High: 60 lbs (27.2 kg) or 60 ft-lbs (81.3 N-m)
Manual Roll Capacity 60 lbs (27.2 kg) or 60 ft-lbs (81.3 N-m)
Recommended Absorber
inches (cm)
5 (13) 8 (20) 12 (30) 12 (30) 12 (30) 12 (30) 12 (30) 18 (46) 24 (61) 24 (61) 24 (61) 24 (61)
Outline Dimensions
Height
inches (m)
80
(2.03)
104
(2.64)
140
(3.56)
140
(3.56)
164
(4.17)
164
(4.17)
188
(4.78)
164
(4.17)
236 (5.99) 320 (8.13) 416
(10.57)
536 (13.61)
Width
inches (m)
90
(2.29)
114 (2.9) 150
(3.81)
184
(4.67)
174
(4.42)
208
(5.28)
208
(5.28)
304
(7.72)
268 (6.81) 391 (9.93) 500 (12.7) 1123
(28.52)
Depth
inches (m)
34.5
(0.88)
34.5
(0.88)
34.5
(0.88)
34.5
(0.88)
34.5
(0.88)
44.5
(1.13)
44.5
(1.13)
44.5
(1.13)
56.5 (1.44) 87 (2.21) 111 (2.82) 135 (3.43)

1 Higher frequencies can be attained when using less than the maximum scan area.

Applications

The MI-6910 Family of Vertical Planar Scanners provides a cost effective solution for precise positioning. These scanners bring unmatched speed and accuracy to planar near-field antenna test applications.

Absolute position accuracy is critical to most measurement applications. The MI-6910 Family of Vertical Planar Scanners is designed to make repeated measurements at critically accurate positions. A prime example is the position accuracy required for near-field antenna measurements. MI Technologies has designed positioners for operation at high frequencies without correction. For even higher frequencies, probe position correction techniques can be applied. Typically high-gain directional antennas with low sidelobes are tested in the planar near-field, and even the smallest position errors and uncertainties can quickly degrade system dynamic range. To ensure the best possible measurement results, MI Technologies has implemented a robust mechanical design utilizing the latest drive system developments.

MI Technologies has a long history of producing accurate and reliable positioning systems. Many of our positioners sold more than 30 years ago are still in use today providing accurate movement of antennas, probes, and other complex components. The MI-6910 Family of Vertical Planar Scanners is designed in this tradition to maintain alignment over long periods of time even when used around the clock.

Ordering Information

The above specifications are only representative of the standard product models listed. The MI-6910 Family of Vertical Planar Scanners is highly customizable and MI Techologies can readily optimize the size, frequency range, planarity and other performance factors to customer requirements. Because of this breadth of design flexibility, customers are encouraged to specify their need rather than the tightest tolerance available.

The MI-6910 scanners are designed to work specifically with MI position controllers. Cables and position control units are ordered separately. If desired, an installed RF path may be requested by ordering the appropriate option.

Configuration Options

Absorber Shield Z-Axis Travel Roll Axis Rotary Joint RF Path

-A0

-Z0 -RTM -RJ26.5 -RF0
-A0
No Absorber
-Z0
No Travel
-RTH Manual Roll -RJ26.5
DC-26.5 GHz
-RF0
No RF Path
-AS
Standard Absorber
-ZH6 Manual
6 in Travel
-RTM Motorized Roll
Standard Capacity
-RJ40
DC-40 GHz
-RFP
Add RF Path1
  -ZH12 Manual
12 in Travel
-RTL Motorized Roll
High Capacity
   
  -ZM6 Motorized
6 in Travel
     
  -ZM12 Motorized
12 in Travel
     

1 Standard RF path frequency range: DC-18GHz, other frequency ranges for RF path available. Consult Factory.