User Manual – Rev AV    AMETEK Programmable Power 
MX Series    12 
1.3 Different Model Series 
There are two versions of the MX Series product, Series I and Series II. This user manual covers both 
MX model series with top level assembly part numbers 7003-400 (Series I) and 7003-422 (Series II). 
The difference between the Series I and the Series II is the controller used. The Series II uses a 
newer controller design but retains backward compatibility with the Series I products. The part number 
is shown on the model / serial number tag on the back of the MX series. All Series II will have a 
firmware revision of 4.0 or higher. The firmware revision is displayed briefly at power up on the LCD 
display and can also be queried over the bus by using the *IDN? command. 
Differences between the two model series are restricted to: 
x  Reduced number of measurement calibration coefficients on Series II. 
x  Increased measurement sampling rate on Series II. 
x  Maximum DC offset range in AC+DC mode is 250Vdc on Series I, 220Vdc on Series II  
Where relevant, differences are highlighted throughout the user manual.