RIGOL   
  
  Service Guide for DM3000 Series 
 
Frequency Calibration 
 
Frequency calibration is easier than others; generally just calibrate 2V range is enough. 
The frequency calibration procedure is: 
 
1.  Press            to select AC voltage measurement function, then press    Rng+    or 
  Rng-    to set the range as 2V; 
 
2.  Press            , and select menu button    T/C        PSW , input password, and set 
  SecrOff , then select    CAL        Enter ; 
 
3.  Input a sine wave of 1V, 450 kHz into the terminal of Input HI-LO by FLuke 5520A, 
and press    Gain , finally select    Save and exit. 
 
 
 
Capacitance Calibration 
 
The way to  calibrating Capacitance is similar with AC but a little difference. It also 
includes Zero calibration and Gain calibration, but all the input terminals on front panel 
are opened. Please refer to the section “AC calibration” about the detailed procedure. 
The capacitance calibration input values are shown in table 4-3. 
 
Table 4-4 Capacitance Calibration input Value