If you can afford the decrease in accuracy, you can use a 1000:1 ratio resistive voltage divider to give the DPM a +/-200V range (0.1V resolution).
The DPM has a full scale accuracy of +/-1.5% and between the DPM’s 10:1 input impedance variation, 1% resistor tolerances, and limited value selections, figure the DPM will decrease to +/-3%. If you have the calibration gear, you could include a trim pot in the divider and calibrate the system to a higher accuracy.
