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.
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.
