EBME Forums Forums Maintenance Test Equipment DNI 454a ESU analyzer help

We still need the Service Manual for the Dynatech Nevada (DNI) 454A ESU Analyzer.

Someone out there must have it ... or perhaps be in a position to scan various pages. We are especially interested in how to calibrate the 454A.

I once tried to change the power supply setting of the MEDTESTER 5000 to 220V. The machine can start normally at 220V voltage, but it will report an error: the system voltage is too high, which should be a voltage range limit.

In my impression, 'Current LOOP' is just a wire passing through the current loop, which is equivalent to providing an external path where external loads can be used. This form is equivalent to the connection method of BC Group ESU-2050.

Is your MEDTESTER 5000 still undergoing continuous improvement?Looking forward to more information sharing from you

Good news, thanks to the way to enter the calibration mode provided by the poster owner, I have successfully completed the whole calibration process in half a day with the online cooperation of the question owner today. The whole process is very simple. You need to prepare an RMS voltmeter (such as Fluke 8920), an AC signal source (2.8-30mvRMS is required), and a DC voltage source (0.45VDC is required), After entering calibration mode, you only need to follow the screen prompts to do the following work: short circuit the BNC socket on the circuit board (make the AMP input zero), apply 0.45VDC to the TP4 pin on the circuit board, follow the prompts to input the required AC RMS millivolt voltage to the BNC socket on the circuit board in sequence (connect the three terminal BNC plug to FLUKE8920 to monitor the voltage of the BNC socket on the circuit board in real time), and finally complete the entire calibration.