1. Introduction
3 3/4 digit volt- and ammeter with a 40 segment bargraph
indication, LCD display, LED backlight, low bat indication,
and RS232 interface.
The unit has a fully auto ranging voltage input to 300
V and a selectable 4 scale ammeter up to 10A. Powerded
by 5 VDC up to 16 VDC and annunciators for units on
display which include min. and max. functions. Unit can
be configured for AC or DC measurement.
2. safety instructions
The maximum voltage allowed for any
connection to the PCB is 300V.
INLO (0V) is internally connected to VSS
(0V)
Note:
Any signal cables connected to this device must not
exceed 30 metres in length.
If signal cables are installed that are routed outside the
building, it will be necessary to install additional surge
protection devices.
3. Specification
Display
Digits 11 mm; 40-Segment bargraph; Leading zero
blanking; Low Bat; x10, x100, DC, AC, µ, m, A, V, MIN,
MAX
Input Range
± 0,1 mV bis 300 V; ± 0,1 µA bis 10 A
Accuracy
DC: V, µA, mA: ±1%
DC: A: ±3%
AC: 40–650 Hz: V, µA, mA: ±1%; A: ±3%
AC: 650–2700 Hz: ±5%
Linearity
± 0,1% full scale
Sample Rate
1 sec.
Input impedance
V: 10 M
Ω
0 bis 399,9 µA: 500
Ω
400 bis 3999 µA: 50
Ω
0 bis 39,9 mA: 5
Ω
40 bis 399,9 mA: 0,5
Ω
0 bis 10 A: 0,005
Ω
Connections
Messeingang: Schraubanschlüsse für Kabel bis
zu 1,5 mm²
Power and control
2 x 5-way 0,1" spacing
Control inputs
Sink or contact only
RS232-output
2400 baud, 7 bit, odd parity, 1 stop bit
Supply
5 to 16 VDC ± 10%, max. 15 mA
Backlight supply
5 to 8 VDC or 12V DC ±0.5V; max. 110mA
Installation category (IEC 664)
Overvoltage category II
Pollution degree 2 (IEC 64)
Operating temperature
0°C to +60°C
Storage temperature
-20°C bis +70°C
Environmental protection
IP50
Altitude
Up to 3000 m
Relative Humidity
max. 85% non-condensing
4. PCB
5. Configuration AC or DC measuring at
solder strap SB
SB open = DC
SB shorted = AC
6. Connections Supply and control at socket
board at CN1
1
VDD 5 VDC to 16 VDC
2
VSS 0 V
3
Backlight supply BL+
4
Backlight supply BL-
5
Control common
6
not connected
7
Control common
8
MAX/MIN
9
RS232-trigger
10
RS232 output
7. Connection backlight supply at CN1
3
5 to 8 VDC
(set jumper at BL)
or 12 VDC.
4
0 V
8. Connection Input at ST
1: INHI
±0,1 mV to 300,0 V
±0,1 µA to 3999 µA
±0,01 mA to 399,9 mA
2: INHI
±0,01 A to 10,0 A
3: INLO
0 V
04
!
3
2
1
10 8 6 4 2
9 7 5 3 1
SB
ST
BL
CN1
CN2
CN3
