DMC OTA Testing Sub 6GHz Portable Wireless Test Chamber

DMC-OTA-S6

The DMC-OTA-S6 series RF shielded enclosures are cost-effective for over-the-air (OTA) testing at 6GHz.

Our advanced shielding technology provides high isolation level make them suitable for OTA mmwave testing.

To minimise path loss and to get best results, these shield boxes can include racking options to incorporate instruments directly at the enclosure.

Frequency 700MHz to 6GHz
Shielding effectiveness > 70dB
4 DUTs test in parallel
High efficient acquisition algorithm for processing the TRP with multiple test probes, instead of adjusting the antenna position by products. Achieve ±1dB accuracy
Support TX, RSSI, BER, BLER，FER, EVM, RSE and other test indicators
Wireless communication with DUT. Avoid the USB impact to the antenna frequency response
Manual or RS-232C/remote operation, suitable for automation line;
Input AC power: 100-240V AC 50Hz.

Technical Specification

Chamber Type	DMC-OTA-S6
Operation Mechanism	Manual Operation
Outer Dimension (Cabinet)	660 W x 1113 D x 1960 H mm
Outer Dimension (Box)	660 W x 600 D x 1000 H mm
Internal Dimension(Box)	560 W x 830 D x 594 H mm
Door Opening Dimension(Cabinet)	660 W x 1513 D x 1960 H mm
Door Dimension	407 W x 115 H mm
Open-close Mechanism	Pneumatic control
Color	Black/White or Custom
Weight	203kg

Dual 5G OTA Testing Portable mmWave Test Chamber

DMC-OTA-DUAL

The DMC-OTA-DUAL series RF shielded anechoic enclosures are cost-effective solutions for OTA testing for mmWave applications with two internally isolated compartments.
Lower section is ideal for placing test equipment such as spectrum analyser, VNA, signal source, RF switching, etc.
Our advanced shielding technology provides high isolation level make them suitable for testing 5G applications such as low-frequency devices (below 1 GHz) LTE-AP 5G-NR, and mmWave (FR1 and FR2).

Typical Specifications

Chamber Type : DMC-RFE-OTA-DUAL

300MHz-40GHz

External dimension 850mm(W) x 950mm(L) x 1200mm(H)

Shielding effectiveness: >80dB

Wireless communication with DUT

EMI filter on all data lines

Manual or RS-232C/remote operation, suitable for automation line

Input AC power: 100-240V AC 50Hz.

5G Millimeter Wave (mmwave) RF Shielded Test Chamber

DMC-5G-mmW

The DMC-5G-mmW series Millimeter wave RF shielded enclosures are advanced and compact direct field OTA test enclosure occupying minimal floor space. 100 mm thick high performance microwave absorber is fully lined on all walls, ceiling and floor.

These enclosures can be used for 5G small cell, Pico cells, Femto and Microcell near field and far field measurements.

Features

Product: DMC Millimeter Wave RF Shielded Enclosure
Frequency range: 20 GHz to 40 GHz
Shielding Effectiveness : >70dB
Inside shield to shield dimension: 2900 mm (L) x 1450 (W) x 1450 (H)
RF shielded door: 1200 mm x 1200 mm, 2 doors
RF shielded door location: On DUT end and transmitting antenna end
Absorber Height: 100 mm
Positioner center location from Absorber tip: 560 mm
Positioner clearance radius required for 360° rotation: 457 mm
DUT to Horn antenna distance: 1800 mm
Honeycomb vent: 200 mm x 200 mm (on both doors)
Fan: On ceiling- 2 nos, On side wall- 2 nos
I/O panels: 4 nos on DUT side and 2 nos on Horn antenna side
Feed through panel for positioner: 200 mm x 200 mm

Technical Specification of Shielded Enclosure with 5 Axis Positioner

Positioner Details

Footprint:	12" x 12" (304 mm x 304 mm)
Total Height:	22.5" (571.5 mm)
Clearance Radius:	18" (914 mm) clearance radius required for full 360° rotation
Total Weight:	42 lbs (19 kg)

Positioner & Turntable (theta)

Frequency Ranges (GHz):	Coax: DC to 6, 18, 40, 50, or 67 GHz
	mmW: 50-75 (V-Band), 60-90 (E-Band) or 75-110 (W-Band) GHz
Resolution:	0.02° full step
	0.00125° microstep
Drivetrain:	3.0A/phase bipolar stepper motor with worm drive
Holding Torque:	25 ft-lb
Movement Range:	360° continuous or indexed
Position Feedback:	800-line encoder
Limits:	Home & Limit (hardware & software)
Weight (positioner only):	16 lbs (7.27 kg)
Positioner Max Speed:	24" per second
AUT Mounting Options:	3/8"-16 or M6 4-hole pattern for general mounting
Composition:	Acrylic turntable with aluminum base
Weight Capacity:	100 lbs (45 kg)
RF Rotary Joint:	Optional (SMA, 2.92 mm, 2.4 mm, 1.85 mm or waveguide)

Gimbal (phi)

Frequency Ranges:	Coax: DC to 6, 18, 40, 50, or 67 GHz
	mmW: 50-75 (V-Band), 60-90 (E-Band) or 75-110 (W-Band) GHz
Resolution:	0.05° full step
	0.00250° microstep
Drivetrain:	2.0A/phase bipolar stepper motor with belt drive
Holding Torque:	20 ft-lb
Movement Range:	360° continuous or indexed
Position Feedback:	800-line Encoder
Limits:	Home (hardware & software)
Weight (gimbal only):	26 lbs (11.7 kg)
Gimbal Max Speed:	24" per second
AUT Mounting Options:	3.625" (92 mm) diameter PVC mounting plate with 10-32 hole array
Composition:	Delrin, ABS, PLA+, fiberglass
Weight Capacity:	40 lbs (18 kg)
RF Rotary Joint:	Optional (SMA, 2.92 mm, 2.4 mm, 1.85 mm or waveguide)

= Custom mounting solutions available upon request

Electrical & Communications

Controller type:	3 axis microprocessor based controller
Resolution:	Full step through 1/32 microstep
Motor Current:	3.125A per motor phase max
Cooling:	Dual 40mm 24V fans
Motor Connector:	M12 axial 5-pin connector + 5-pin encoder connector
Communication Interface:	DB9 RS232 serial port with external USB adapter
Communication cable length:	1 meter
Input Voltage:	24VDC 3A
Power Supply (included):	24VDC 5A & 110/220v input
Motor cable length:	1 meter