Fluke 1760 [25/110] Warning

Fluke 1760 [25/110] Warning
Introduction
Design and Functions 1
1-15
Note
The LED OK is red if no valid sensor can be detected.
The limits for ‘Signal too low’ and ‘Signal too high’ are equal to the
thresholds for voltage dips and voltage swells (e.g.
±
10 % of Un).
For current inputs ‘Signal too low’ is indicated for half cycle or full cycle
rms values below 10 % of the sensor range as configured in the “Hardware
Settings” panel (if sensor is set to “Auto” the “Signal too low” indication
is deactivated).
‘Over range’ is indicated if the input signal is outside the valid range of the
analogue to digital converter (ADC, i.e.
±
32.700 counts).
The phase voltages UL1, UL2, and UL3 of a three-phase system are monitored with the
symmetrical components (zero, positive and negative system). If the negative system
exceeds an upper threshold a wrong phase sequence condition is indicated (e.g. two lines
interchanged); the associated LEDs are flashing in sequence L3-L2-L1.
WX Warning
The LEDs do not indicate whether there is voltage. Do not rely
on the LEDs to find out whether the device under test is live or
not.
D Ethernet port
Used for connection of the Recorder to an Ethernet port of a PC, or to an Ethernet
network (LAN). For a connection to an Ethernet network use the supplied Ethernet cable.
For direct connection of the instrument to a PC use the cross-linked Ethernet cable (with
the red plug).
E 2 USB connectors
Two USB type A connectors for connection of the instrument to the USB-port of a PC.
USB version V2.0 is supported. A special link cable has to be used (USB cable A-A).
USB connectors have 2 functions:
1. Virtual network connection with USB data link cable
2. Memory stick support for storing of measurement data (same as external CF
card)
CF card LED behaviour during USB copy process:
copy process started --> flashing LED
copy process finished and all data copied --> LED goes off
copy process finished but not all data could be copied --> LED is turned on
statically
on error --> fast flashing LED for approx. 3 seconds then statically on
Note
USB stick must not be pulled out while CF card LED is flashing. This can
cause permanent damage to the storage media. Only remove CF card /
USB stick while CF card LED is OFF or statically ON.

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