SP400 Martel Electronics, SP400 Datasheet - Page 4

• Manufacturer Part Number: SP400
• Description: LCD DPM 200MV 3.5 DIGIT
• Manufacturer: Martel Electronics
• Series: SPr
• Type: Voltmeterr

Specifications of SP400

• Measuring Range: 200mVDC
• Display Style: Black Characters, Green Background
• Display Type: LCD
• Display Face Size: 1.38" L x 0.88" W (35.1 x 22.4mm)
• Display Digits: 3.5
• Display Digits - Height: 0.384" (9.75mm)
• Backlight: Green
• Mounting Type: Panel Mount
• Termination: PC Pins
• Voltage - Supply: 3 ~ 7.5VDC, 6 ~ 15VDC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 227-1053

SP 400
Specifications liable to change without prior warning
±200mV
±200mV
SCALING
Two external resistors Ra
and Rb may be used to
alter the full scale reading
(FSR) of the meter - see
table. The meter will have
to be re-calibrated by
adjusting the calibration
potentiometer on the rear
of the module.
Measuring a single ended input
voltage referenced to supply, i.e. the
input voltage and the meter's power
supply share the same 0V rail.
Ensure solder link LCOM is open.
Measuring a single ended input
voltage referenced to supply, i.e. the
input voltage and the meter's power
supply share the same 0V rail.
Ensure solder link LCOM is open.
APPLICATIONS
Do not connect more than one meter to the same power supply if the meters cannot use the same signal
ground. Taking any input beyond the power supply rails will damage the meter.
5V supply operation
9V supply operation
+3.0 to +7.5V
+3.0 to +7.5V
-3.0 to -7.5V
+
+
-
-
4
5
4
5
INH
INL
INH
INL
GND
V+
V+
V-
1
2
1
9
DP1
DP2
DP3
BL-
(3.0 to 7.5V Meter Power Supply)
(6.0 to 15.0V Meter Power Supply)
0V
6
7
8
3
No DP
PO Box 770, Londonderry, NH 03053 1-800-821-0023
www.martelcorp.com
Rs=(V+) - (V-) - 5V
*Ensure that Ra is rated for high voltage use.
Voltage
Current
±200mV
±200mV
+6.0 to +15.0V
Measuring an input voltage referenced to
a floating supply, i.e. the input voltage
and the meter's power supply are isolated
from each other.
Ensure solder link LCOM is closed.
Measuring an input voltage referenced to
a floating supply, i.e. the input voltage
and the meter's power supply are isolated
from each other.
Ensure solder link LCOM is closed.
+3.0 to +7.5V
0.04
www.lascarelectronics.com
+
+
-
-
2000V*
200mA
200 A
20mA
200V
2mA
20V
FSR
SP 400
2V
4
5
4
5
INH
INL
INH
INL
910k
1M
1M
1M
0R
0R
Ra
0R
0R
GND
V+
V+
V-
1
2
1
9
Issue 6
BL-
BL-
100R
100R
100k
10R
10k
Rb
1R
1k
1k
3½ Digit Backlit LCD Voltmeter Module
3
3
if V+>5V then
Rs=(V+ - 5V)
Rs=(V+ - 5V)
June/2002
0V
0V
0.04
0.04
+6.0 to +15.0V
Vin or in
+3.0 to +7.5V
I
I-
I
I-
Measuring a current from a circuit which is
floating with respect to the DPM's supply,
i.e. the current and the meter's power
supply are isolated from each other.
Ensure solder link LCOM is closed.
Measuring a current from a circuit which is
floating with respect to the DPM's supply,
i.e. the current and the meter's power
supply are isolated from each other.
Ensure solder link LCOM is closed.
+
+
+
-
Rb
I
Rb
Ra
M.C.
4
5
4
5
INH
INL
INH
INL
Rb
GND
V+
V+
4
5
V-
1
2
1
9
INH
INL
Applies to SP 400/3
SP 400
Page 4 of 4
0V
0V