Fluke 1760 User Manual page 25

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.
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
measurement range.
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.
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
The USB type A connectors for connection of a USB memory device, USB version V2.0
is supported.
USB connectors have the following function:
•
USB 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
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. Do not use CF card
or data connection at the same time.
F Serial port COM1 (RS232)
Serial port for connection of the device to the serial port of a PC.
The default settings are 57.600 Baud, 8 data bits, 1 stop bit, no parity.
Note
±
XW
Warning
Note
Design and Functions
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Introduction
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