Multiplexer (Accessory Item)
The Multiplexer is an optional accessory for the LTT. It allows users to connect 1-4 torque sensors to the Torque Analyzer simultaneously. The device eliminates the need to plug and unplug torque sensors. The LTT powers the Multiplexer so no additional power source is required. Note: Starting April 2007, LTTmodels can be used with this Multiplexer. Mountz LTTunits with serial numbers that start with digits "07" and later feature a new firmware and hardware. Only models with serial numbers 07-01-001 or later can operate with the Bar Code Reader of Multiplexer. Prior LTTversions cannot support the Bar Code Reader and Multiplexer. Firmware and revision data can be seen on initial power on of unit. Customers with older LTTversions, can send their unit to our service department and pay for it to be upgraded to operate with the Multiplexer.
Note: When calibrating torque sensors, perform this operation with the torque sensor connected directly to the LTTand not connected through the Multiplexer.
Model: Multiplexer Item # 072998
Operation with the Multiplexer (Mux) When the Analyzer is connected to the Multiplexer and powered on it reviews the Multiplexer (Mux) to determine what torque sensors are connected and downloads the identity and calibration data for each of the attached torque sensors. The "Soft" key on the right hand side will indicate the currently selected Mux port such as Mux 1, Mux 2 etc. In addition, an LED on the right side of the torque sensor connection to the Mux will light-up indicating which torque sensor is currently selected.
Selecting Transducer Manually 1. Press the Mux "Soft" key and it will provide a list of currently connected torque sensors. 2. The user can scroll through the list torque sensors and press Enter to select a model.
Selecting a Torque Sensor Automatically An automatic transducer selection is available. 1. ATool Test is entered that includes one of the torque sensors connected to the Mux and this Tool Test is sent to the Analyzer. 2. Now when the Tool Test is selected on the LTT, the analyzer automatically connects to the required torque sensor using the Mux. This reduces operator error of accidentally selecting the wrong torque sensor for a tool test. The Multiplexer can be used with the optional Bar Code Reader. Amore complete description of the Bar Code Reader is on page 35. This combination provides a flexible, time saving solution that reduces the potential for operator error. For users that have many Tool Tests and using multiple torque sensors, these two accessories is the ideal solution for torque testing.
Example of using the Bar Code Reader and Multiplexer.
The user enters a Tool Test that includes one of the torque sensors connected to the Mux. In addition they enter the Serial Number of the Tool to be tested. This Serial Number is bar coded on the Tool to be tested. This Tool Test is down- loaded to the Analyzer. Now when the Bar Code of the Tool is scanned the Analyzer automatically selects the correct torque sensor by using the Mux and starts the appropriate Tool Test.
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