Baker D30R User Manual - page 14

Instrument Overview 

12/3/2009 | 71-022 V6 

D30R 

14 

6)

Test 

The Test button activates the high voltage output of the tester.  One of the selected modes, 

Surge, or HiPot will be enabled and a voltage will be impressed on the device being tested.  

This button automatically disengages when released. 

7)

Open ground warning light 

When the AC line source is not properly grounded, the red Open Ground light will illuminate. 

The test set will power up, but high voltage will be withheld by internal electronics. 

8)

HiPot trip warning light 

This lamp illuminates to indicate a DC HiPot trip circuit has stopped the test. The red lamp 

will stay illuminated until the test button is released. 

9)

Intensity 

Rotation of this control will adjust the intensity or brightness of the display.   Clockwise (CW) 

will increase intensity.  Counterclockwise (CCW) will decrease intensity.  Intensity has a slight 

effect on the focus and can be adjusted to a blank screen. 

10)

Vertical position 

This control adjusts the up or down positioning of the surge wave pattern.  Optimum 

positioning is usually on the center of one major graticule line below center for surge testing. 

11)

Horizontal position 

This control adjusts the side to side positioning of the surge wave pattern. A trace beginning 

at the far left is suggested for surge testing. 

12)

Function selector 

This control selects the type of test to be performed and the sensitivity of the DC HiPot 

leakage current display.  The name of the test chosen is displayed on the lower portion of the 

CRT for reference.  There are four primary positions as follows. 

Aux: The auxiliary position is for the D30R is used for Surge and HiPot modes. 

Surge: This position selects the Surge Test. The name of the test and the microseconds per 

division measured is displayed on the lower portion of the CRT for reference. A digital readout 

for the peak voltage of the test is also displayed in the upper right portion of the screen for 

reference. 

HiPot- μA/div This position is used for DC HiPot testing. The name of the test is displayed on 

the lower portion of the CRT for reference. A digital readout for the leakage current (in micro-

amps) of the test and the resultant resistance in mega-ohms is also displayed on the screen 

for reference.  There are three positions associated with the HiPot test. The three positions 

are 100uA/div, 10uA/div, and 1uA/div. The chosen micro-amps per division setting is 

displayed on the lower right portion of the CRT for reference during testing u-Amps/Div 

controls the sensitivity of the current displayed.  It also automatically selects the overcurrent 

trip point, which will be ten times these settings or 1000, 100, and 10 micro-amps 

respectively.  

13)

Volts/div 

This control sets the sensitivity of the display or scale factor in volts per division for both the 

Surge and DC HIPOT traces. There are four settings corresponding to 1250, 2500, 5000, and 

7500 volts per division. 

Note:

 this knob setting does not limit the output voltage of the tester. 

14)

Seconds/div