DPM 3
11mm (0.43鈥? Digit Height
Programmable Decimal Points
Auto-zero
Auto-polarity
200mV d.c. Full Scale Reading (F.S.R.)
3錕?frac12; Digit Subminiature LCD Module
The DPM 3 is the largest in our sub-miniature series of meters but still uses the same miniaturisation techniques to produce a very compact
instrument. The snap-in integral bezel makes installation easy. For single rail operation, the DPM 3S features a built in negative rail generator,
enabling the meter to measure a signal referenced to its own power supply 0V
.
-
+
SCALING
A potential divider may be used to alter the full scale
reading (F.S.R.) of the meter - see table.
NOTES
The meter will have to be
re-calibrated by adjusting
the calibration potentiometer
at the rear of the module.
+
Ra
INPUT
Rb
1M
Standard Meter
Single Rail Version
Accuracy (overall error) *
Linearity
Sample rate
Operating temperature range
Temperature stability DPM 3
DPM 3S
Supply voltage
DPM 3
DPM 3S
Supply current
DPM 3
DPM 3S
Input leakage current (Vin = 0V)
Stock Number
Min.
Typ.
0.1
3
200
100
9
5
150
250
1
DPM 3
DPM 3S
Specification
Max.
鹵1
50
14
7
10
3
10nF
IN HI
-
2
IN LO
0
7
3
% (鹵1 count)
count
samples/sec
擄C
ppm/擄C
V
碌
A
pA
Unit
Required F.S.R.
2V
20V
200V
2kV
200
碌
A
2mA
20mA
200mA
note
910k
1M
1M
10M
0R
0R
0R
0R
Ra
100k
10k
1k
1k
1k
100R
10R
1R
Rb
* To ensure maximum accuracy, re-calibrate periodically.
NOTE
Ensure that Ra is rated for high voltage use.
DIMENSIONS
All dimensions in mm (inches)
40.0 (1.57)
27.3 (1.07)
a
b
c
d
a.
b.
c.
d.
e.
f.
g.
h.
2.00
6.00
1.60
6.00
2.54
0.50
6.00
2.00
(0.08)
(0.24)
(0.06) max
(0.24)
(0.10)
(0.02)
(0.23)
(0.08)
Panel cut-out
38.0 x 18.0 (1.50 x 0.71)
Panel thickness
1.0 to 2.5 (0.04 to 0.1)
ON BOARD SOLDER LINKS
20.0 (0.79)
12.7 (0.50)
e
11
f
1
g
h
REF
11
1
REF HI
REF LO
IN HI
COM
V+
GND
17.5 (0.69)
IN LO
BAT
TEST
XDP
V-
DP1 DP2 DP3 BAT
37.5 (1.48)
PANEL FITTING
Locate the meter by passing it through the front of the panel cut-out and gently push until the rear of the bezel is flush with the panel (DO NOT PUSH ON
THE LCD). The snap-in lugs will now automatically hold the meter firmly in position.
1
2
