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DM-4101D-1 View Datasheet(PDF) - DATEL Data Acquisition products

Part Name
Description
Manufacturer
DM-4101D-1
Datel
DATEL Data Acquisition products  Datel
DM-4101D-1 Datasheet PDF : 14 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
RN-3100/-4100
PA N E L M E T E R R A N G E C H A N G E K I T
TABLE 1: RANGE CHANGE MODIFICATIONS APPLICABLE TO ALL MODELS
RANGE
20V
200V
200mA
20mA
2mA
200µA
MODIFICATION
R1=4.22M
R1=4.22M
R2=10
R2=100
R2=1K
R2=10K
R2=464K
R2=42.2K
SGl=OPEN*
SGl=OPEN*
*For DM-4105/4106, Open SG4 (Leave SGl Closed).
TABLE 2: 200mV RANGE CHANGE MODIFICATIONS
MODEL
DM-3100N
DM-3100Ul
DM-3100U2
DM-3100U3
DM-3101
DM-3100B
DM-3104
DM-3100L
DM-3103
DM-3100X
200mV RANGE MODIFICATION
C3=0.47µF
C3=0.47µF
C3=0.47µF
C3=0.47µF
C3=0.47µF
C3=0.47µF
C3=0.47µF
C3=0.47µF
C3=0.47µF
C3=0.47µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
C4=l.0µF
R5=46.4K
R5=46.4K
R5=46.4K
R5=46.4K
R5=46.4K
R7=46.4K
R7=46.4K
R5=46.4K
R5=46.4K
R5=46.4K
R7=6.65K
R7=6.65K
R7=6.65K
R7=6.65K
R7=6.65K
R9=6.65K
R9=6.65K
R7=6.65K
R7=6.65K
R7=6.65K
R8=50 pot.
R8=50 pot.
R8=50 pot.
R8=50 pot.
R8=50 pot.
R10=50 pot.
R10=50 pot.
R8=50 pot.
R8=50 pot.
R8=50 pot.
R9=75
R9=75
R9=75
R9=75
R9=75
Rll=75
Rll=75
R9=75
R9=75
R9=75
2) Locate the loose components in this kit which will be required to change your particular meter to the desired range.
In the tables above, components prefaced with "C" are capacitors, resistors are listed with an "R" followed by the
resistance value in Ohms, and potentiometers are indicated by the abbreviation "pot". Solder gaps are denoted by
"SG".
3) Open the meter’s case to gain access to the printed circuit board. Low profile models are opened by snapping off the
rear panel, using a screwdriver to carefully depress the retaining tabs located on the sides of the meter. Access to
short-depth models is achieved by removing the cotter pin at the rear of the meter, snapping off the front bezel, and
sliding the PC board forward.
4) Compare the PC board to the assembly drawing for that model as given in this document. Locate the component and
solder gap locations which pertain to the desired modification. Note that some component locations will have no
component installed. For example, Rl and R2 locations for all models do not have components installed.
5) Remove and replace components as necessary to achieve the desired modification. NOTE: WHEN MODIFYING
UNITS TO THE 200V RANGE, IT IS RECOMMENDED THAT THE OPEN SOLDER GAP SG1 BE COV-
ERED WITH CONFORMAL COATING.
6) After reassembling the unit, you may need to recalibrate the meter. This procedure is described in each meter’s
data sheet. A generalized calibration procedure is as follows:
a) Power-on the meter and allow it to warm up for ten minutes.
b) Using a precision voltage source, provide a near full-scale positive signal to the meter’s inputs.
c) Adjust the meter’s gain potentiometer (located at the rear) until the display is correct.
d) Reverse the polarity of the signal input and check the meter’s reading.
REPAIR RETURNS
When returning a modified meter to DATEL for repair, the unit must be restored to its orignal ±2V input configuration
prior to return. Damage to the meter caused by improper modification will void the unit’s warranty.
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