Leverage the highly scalable FlexTest architecture and industry-proven 793 software toolset to define and automate virtually any material, component, subsystem or structural test. Foundational to the MTS testing portfolio, FlexTest controllers are deployed worldwide, delivering high-speed closed-loop control, function generation, transducer conditioning and data acquisition for myriad applications spanning aerospace, automotive, biomedical, civil engineering, rail and more.
Optimum test data fidelity is achieved with adaptive control techniques, calculated channels, cascaded control loops and RPC interoperability
An evolved EtherCAT interface, full-featured 793 software and MTS application software provide the tools needed to address a diverse array of test requirements
Industry-proven, modular architecture can be readily scaled to support demands for higher performance, growing test complexity and expanding project volume
FlexTest controllers employ the same internal clock as MTS FlexDAC 20 units to provide the industry's only truly synchronized control and data acquisition solution
Strategic enhancements to the FlexTest digital system controller platform have yielded significant increases in processing power.
Developed to help test labs address evolving test complexity and demands for increased accuracy, economy and efficiency, new FlexTest Elite Performance Models 60, 100 and 200 are purpose-engineered to deliver:

| Maximum System Update Rates | ||||||
Control | FlexTest 60 | FlexTest 100 | FlexTest 200 | |||
Standard | Elite Performance | Standard | Elite Performance | Standard | Elite Performance | |
1-2 | 6144 Hz | 8192 Hz | 6144 Hz | 8192 Hz | 6144 Hz | 8192 Hz |
3-4 | 4096 Hz | 8192 Hz | 4096 Hz | 8192 Hz | 4096 Hz | 8192 Hz |
5-8 | 2048 Hz | 6144 Hz | 2048 Hz | 6144 Hz | 2048 Hz | 6144 Hz |
9-16 | NA | 4096 Hz | 2048 Hz | 4096 Hz | 2048 Hz | 4096 Hz |
17-32 | NA | NA | NA | 4096 Hz | 2048 Hz | 4096 Hz |
32-40 | NA | NA | NA | NA | 1024 Hz | 4096 Hz |
40+ | NA | NA | NA | NA | NA | 4096 Hz |

793 Controller Software makes it easy to quickly and efficiently configure a FlexTest controller for a wide range of testing applications. In addition to accuracy-enhancing tools such as adaptive control compensation, calculated channels and cascade control, it features an intuitive interface that facilitates easy definition and control of workspaces across stations, as well as project management tools designed to organize data from complex tests spanning multiple stations and operators. 793 software delivers the advantages of FlexTest controls through any one of MTS' industry-renowned application software packages.
MTS Application Software

MTS FlexDAC 20 Data Acquisition Systems employ hardware-based clock synchronization with FlexTest digital controllers controllers to yield extremely high data accuracy.
It’s critical to know what load level produces a given strain value, however, any skew between controller and data acquisition systems introduces uncertainty into results. Stitching together data ported from different software applications after-the-fact is one major source of skew and post-test uncertainty. MTS engineers have overcome this problem with a hard sync between MTS FlexDAC 20 data acquisition systems and FlexTest digital controllers, using AeroPro software. Essentially, MTS FlexDAC units employ the same internal clock as FlexTest controllers to generate a truly synchronized control and data acquisition stream. This enables a scan of both at precisely the same clock tick with zero skew between applied load and and acquired data. MTS is the only test solutions provider to offer truly synchronized control and data acquisition.

Series 494 Hardware includes:
FlexTest 40
- 494.41 or 494.42 System board
- 494.44 Two-Station System board
- Optional 494.32 DIO breakout box
- Optional 494.33 DIO power supply
FlexTest 60, 100 & 200
- 493.73 HPU interface board
- 494.74 Dual HSM interface (On/Off or Off/Lo/Hi) (3)
- 494.75 8-Input BNC board
- 494.76 8-Output BNC board
- 494.31 High-Power DIO breakout box with
- 494.33 DIO power supply
- 493.72 Digital I/O interface board
- 493.74 Dual HSM interface board
- 494.49 Quad Encoder interface
Aerospace Structural Testing
- 494.43 Multi Chassis interface board
- 494.79 8-Channel valve driver board
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FlexTest 40 |
FlexTest 60 |
FlexTest 100 |
FlexTest 200 |
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Configurability |
No configuration constraints: Any input can be assigned to any control channel; Control channels can be assigned to any station without changing circuit boards or cables. |
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Test Stations* |
1 or 2 |
Up to 4 (6 if on/off HSMs) |
Up to 8 |
Up to 8 |
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Control Channels* |
Up to 4 |
Up to 8 |
Up to 16 |
Up to 40 |
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Conditioned Transducer Inputs* |
Up to 12 |
Up to 24 |
Up to 40 |
Up to 80 |
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Auxiliary Data Inputs* |
Up to 16 |
Up to 32 |
Up to 64 |
Up to 96 |
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User Definable Digital I/O |
3/3 included |
16/16 available |
16/16 available |
32/32 available |
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Input on Voltage |
2.7-26 VDC @ 0.5 maA minimum |
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Input Resistance |
2 K ohm |
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Output |
30V, 1A maximum |
30 VDC, 2A maximum |
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Maximum System Update Rates* |
Standard |
Elite Performance |
Standard |
Elite Performance |
Standard |
Elite Performance |
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1-2 Control Channels |
6144 Hz |
6144 Hz |
8192 Hz |
6144 Hz |
8192 Hz |
6144 Hz |
8192 Hz |
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3-4 Control Channels |
4096 Hz |
4096 Hz |
8192 Hz |
4096 Hz |
8192 Hz |
4096 Hz |
8192 Hz |
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5-8 Control Channels |
NA |
2048 Hz |
6144 Hz |
2048 Hz |
6144 Hz |
2048 Hz |
6144 Hz |
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|
9-16 Control Channels |
NA |
NA |
4096 Hz |
2048 Hz |
4096 Hz |
2048 Hz |
4096 Hz |
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17-32 Control Channels |
NA |
NA |
NA |
NA |
4096 Hz |
2048 Hz |
4096 Hz |
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32-40 Control Channels |
NA |
NA |
NA |
NA |
NA |
1024 Hz |
4096 Hz |
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40+ Control Channels |
NA |
NA |
NA |
NA |
NA |
NA |
4096 Hz | ||
*Limitations may apply to realize capacities shown
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FlexTest 40 |
FlexTest 60 |
FlexTest 100 |
FlexTest 200 |
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Dimensions (including enclosure) |
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Height |
14 cm (5.5 in) |
44.2 cm (17.4 in) |
56 cm (22 in) |
98 cm (38 in) |
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Width |
43 cm (17 in) |
21.6 cm (8.5 in) |
37 cm (14.5 in) |
60 cm (24 in) |
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Depth |
44.5 cm (17.5 in) |
64.8 cm (25.5 in) |
66 cm (26 in) |
90 cm (35 in) |
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Weight |
8.6 kg (19 lb) |
14 kg (31 lb) |
45.4 kg (100 lb) |
100 kg (220 lb) |
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Power Input |
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Voltage |
Universal input: 100-240 VAC single-phase; 50-60 Hz |
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Surge current (for 1/2 cycle) |
< 40A |
< 40A |
< 80A |
< 100A |
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Static current at 115 VAC |
~ 4A |
~8A |
~12A |
~16A |
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Static current at 230 VAC |
~ 2A |
~ 4A |
~ 6A |
~ 8A |
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Leakage current |
< 3.5 mA |
< 3.5 mA |
< 3.5 mA |
< 3.5 mA |
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Circuit protection |
Short circuit protection by duty cycle fold-back with auto recovery |
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Hydraulic Service Manifold I/F |
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HSM contact outputs |
1.0 A @ 24 VDC |
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HSM proportional output |
20 - 800 mA; 2 or 4 sec. ramp on; |
Only available with 493.74 board: 20 - 800 mA; 2 or 4 second ramp on; |
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Program Generation |
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Frequency range |
0.001 Hz to 600 Hz; Recommend frequency not exceed 10% of system update rate. |
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Resolution |
32 bit |
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Waveforms |
Haversine, square, triangle, ramp, true sine, random, and sine-sweep |
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Other |
Broad band, frequency-weighted random signal generation; Soft start-stop available on all functions |
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FlexTest 40 |
FlexTest 60 |
FlexTest 100 |
FlexTest 200 |
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Valve Drive - 2 Stage |
Dual-balance differential current source |
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Output range |
Adjustable full scale up to 100 mA. Compliance voltage = 20 V |
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Output dither |
Amplitude adjustable: 0-50% FS current. Frequency adjustable: 1-4915 Hz |
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Valve Drive - 3 Stage |
Dual-balance differential current source |
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Output range |
Adjustable full scale up to 100 mA. Compliance voltage = 20 V |
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Output dither |
Amplitude adjustable: 0-50% FS current. Frequency adjustable: 1-4915 Hz |
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Excitation |
Balanced output 100 mA maximum +/- 20 VAC, frequency set to 10 kHz |
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Input |
Differential AC-coupled with adjustable gain and zero |
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Input-loop controller |
Proportional and differential |
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Digital Universal Conditioner |
Primarily for resistive-type or reactive-type transducers |
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Excitation |
Balanced constant-voltage or constant-current, supports 4-wire or 8-wire connections |
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DC excitation amplitude |
1 - 20 V |
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AC excitation amplitude |
1 -10 V peak-peak |
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Excitation frequency |
Selectable: 10, 5, 2.5, 2, or 1 kHz |
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Gain accuracy |
1 -10 V peak-peak |
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Temperature drift |
Selectable: 10, 5, 2.5, 2, or 1 kHz |
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Interlocks |
1 -10 V peak-peak |
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TEDS support |
Compatible with IEEE 1451.4 Class 2 |
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Analog Inputs (optional) |
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Input voltage |
+/- 12.5 V |
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Signal Processing |
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Input resolution |
19 bit with over-sampling |
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Internal data sample rate |
122.88 kHz (simultaneous sample and hold on all analog inputs) |
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Sample update rate |
Simultaneous sample and hold, sampled at update rate: 1024 - 6144 Hz |
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Signal processing |
32 bit floating point |
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Types |
Timed sample, peak / valley, max / min, level-crossing, cyclic / logarithmic, and with ability to tie data channels to a master signal |
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Digital filters |
Bessel, Butterworth, Elliptical |
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RPC |
Time History data acquisition for RPC analysis is available |
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Format |
Data transfer to ASCII, and optionally to MTS RPC format |
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Digital Transducers |
Quadrature (e.g. incremental encoder), SSI (e.g. Temposonics R, absolute encoder, PWM (e.g. Temposonics G) |
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Analog Outputs (optional) |
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Output voltage |
+/- 10 V |
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Maximum load |
2000 ohm minimum, 1000 pf maximum |
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Output resolution |
16 bit |
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Environment |
Temp: 5-40 deg C; RH: 5-85% |
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