TURNTABLE

HIGH PRECISION ANGULAR POSITIONING SYSTEM

MDT-4000

The MDT-4000 is a motorized rotation stage that can be used to rotate devices such as speakers or microphones to measure the output amplitude or receive sensitivity versus rotation angle. The device under test can be rotated at a constant velocity or in incremental steps. When at rest, the device is acoustically silent.

The system can be controlled by the local front panel as well as
remotely by either USB, RS-232 or LAN interfaces. An embedded
webserver allows the system to be controlled remotely from any
device that can run a web browser such as a cell phone or tablet computer.

To aid with cable routing, there is a 50 mm center hole that can be used to cleanly route cables from below the turntable to the device under test.

Specifications

Applications

Repeatable, automated directivity measurements
Continuous rotation of signaling devices

Types of test devices

Loudspeakers
Microphones
Telephones
Laptops and tablets
Electronic components
- PCBs, displays, power supplies

CONTROL INTERFACES

TOUCHSCREEN

Access every parameter directly from the front panel for on-the-fly configuration changes or troubleshooting. User configuration can be saved as the power on defaults. Motion can be controlled from the front panel press-buttons.

WINDOWS COMMAND LINE UTILITY

Configure every parameter and control the turntable from the command line. Integrate into a test application or call from your analyzer control software.

BUILT-IN WEBSERVER

Configure and control the turntable over the LAN using the built-in webserver from a desktop, laptop, phone or tablet.

LAN REST API

Easily integrate control of the turntable into your custom test application using the REST API endpoints.

TYPICAL SPEAKER DIRECTIVITY MEASUREMENT SETUP

SPECIFICATIONS

Parameter	MDT-4000
Motion
Step resolution	0.1 deg
Angular accuracy	0.5 deg
Max velocity	3 RPM
Dimensions
Platter diameter	400 mm (15.7 in)
Center thru-hole	50 mm (1.9 in)
Max test device weight	100 kg (220 lb) centered 25 kg (55 lb) on edge
Size (W x D x H)	437 x 437 x 100 mm (17.2 x 17.2 x 3.9 in)
Weight	12 kg (26 lb)
Environmental
Temp range	Min: +5 C (41 F) Max: +50 C (122 F)
Humidity	0 - 90 %RH
Enclosure	IEC 529: IP 23
Electrical
Supply voltage	24 Vdc
Current	Max: 3 A Idle: 0.1 A
Power supply	External laptop style, worldwide input (100 to 240 Vac, 50/60 Hz)
Power connector	Barrel type (2.5 x 5.5 mm)