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Instruction sheet 727 100
0.2 Technical data
Graphic display: 9 cm (3.5"), QVGA, colour, high brightness
(adjustable up to 400 cd/m
Operation:
Push-button and rotary selector with push-
button
Inputs:
4 isolated measuring channels, each with
U and I measurement (max. 8 usable
simultaneously)
Input A-D :
U and I connection
Output U-X:
Voltage outputs ±10 V, 200 mA (only for
727 110)
Output Y:
Voltage output as function generator,
0.01 Hz to 20,000 Hz (only for 727 110)
Sockets for U and I: 4-mm safety sockets
Voltage ranges
25.0/70/250/700 V
U:
±36/±100/±360/±1000 V
Current ranges I: 0.7/1.6/7/16 A
±1/±2.4/±10/±16 A
Sampling rate:
Max. 1,000,000 values/s per channel,
for U and I, max. 500,000 values/s
Resolution of the
16 bits
analogue inputs
and outputs:
Loudspeaker:
Error message when the measuring
ranges are exceeded
Data memory:
builtin MicroSD card (4 GB) for more than
a thousand measurement files and
screenshots
WLAN
802.11 b/g/n as access point or client
(WPA/WPA2) – A client connection to an
Internet-enabled router/hotspot also
enables the Internet connection of
connected tablets or smartphones
HTTP server:
integrated (display of multimeter, table, and
diagram in a browser)
WebSocket
integrated (distribute current measurement
server:
data to up to four clients)
VNC server
integrated (remote operation by
transmitting the display content to a client)
USB ports:
Connection of a USB-C
Mains voltage:
230 V, 5060 Hz
Dimensions:
300 mm x 300 mm x 185 mm
Weight:
2700 g
1 Description
1.1 Measuring channels
•
Each channel can measure the voltage U and the
current I.
•
Each channel is isolated against every other channel and
against the control unit in accordance with CAT III.
•
The measuring resistors in the circuit are designed as
specified on the imprint of the screen.
•
The polarity of voltage U and current I is arranged such
that the power P is positive (consumption) if the power
flows from left to right.
•
When voltage measurement of an AC voltage is activat
ed, its frequency f can also be measured.
•
When the voltage and current measurement is activated,
the power P and for alternating values (RMS value), the
load angle φ and the frequency f can also be measured.
2
)
RMS
AV
RMS
AV
1
Tel: +49-2233-604-0 · Fax: +49-2233-604-222 · Email: info@ld-didactic.de · Technical alterations reserved
•
For alternating values (RMS value), if more than one
channel has been activated, the shift angle can be mea
sured with respect to the reference value of channel A.
1.2 Mask
2
•
Each channel is protected by a 16 A gR ceramic fuse link.
These can be replaced after removing the mask.
•
It can only be replaced after all test leads have been re
moved and the device has been switched off (see safety
note). The mask is secured with six screws.
•
The fuses can be pried out by using a screwdriver in the
slot on the side.
•
The device must not be operated with an open mask.
1.3 Display
3
Fig. 2:
Display for manual measurement.
Menu bar
Contains all sub-menus that have been activated. The selec
tion is made with the rotary selector
Display field
•
Individual measured values and settings of the output
channels.
•
All measured values of a measuring channel A to D with
the settings of the associated output.
•
All measured values (no more than 24 values)
•
Vector diagram
•
Table
•
Diagram
Status bar
•
Information about the measurement
•
WiFi status
•
Time of day
1.4 Rotary selector and OK button
Turn the rotary selector
to make a selection in
•
the menu bar (move left – right),
•
the settings menus (move up – down),
•
the range menus (move up – down),
•
value lists (move up – down).
In some settings menus, it is necessary to move to the right.
This can only be done with the cursor buttons (e.g., trigger
menu).
© by LD DIDACTIC GmbH · Leyboldstraße 1 · D-50354 Hürth · www.ld-didactic.com
3 / 15
, and activated with OK.
4
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