Synrad FH FLYER - Ethernet Port; Ethernet Overview; Ethernet Port Leds

ing the USB port unusable.
FH Flyer heads, with serial numbers FHFLxxx100042 or higher, contain built-in isolated USB circuitry.
Optical USB isolation provides protection from any ground loop voltage dierentials that may exist and
reduces the possibility that electromagnetic interference may disrupt communication between Flyer and its
control device.
In industrial environments with excessive electrical noise problems, the USB protocol is susceptible to
interference from radiated and conducted emission in excess of permissible EU standards. If your applica-
tion requires the use of a USB connection in electrically-noisy environments, SYNRAD recommends
installing an isolation device like the Icron
®
USB Rover
™
200 Isolated USB Hub. The USB Rover 200
provides immunity to ground loops by converting USB data into optical signals that are transmitted down
a 32.8 foot (10 m) ber optic cable and back into digital data at the other end. This optically isolated USB
connection may improve immunity to electrical interference if you expose only the optical cable portion
to potential interference AND minimize or shield the rest of the USB cable from the interfering environ-
ment.
See SYNRAD Technical Bulletin #13 (available from the SYNRAD web site at http://www.synrad.com/
Manuals/tech_bulletins.htm) for further information about operating FH Flyer in electrically-noisy envi-
ronments.
Ethernet port
The Ethernet port section includes subsections:
 Ethernet overview
 Ethernet port LEDs
 Ethernet/Flyer cabling
Ethernet overview
FH Series Flyer marking heads incorporate an Ethernet connection for communication between the host
and the head. This connection provides a communication link between WinMark Pro and the Flyer head
when marking or testing in real-time. Flyer heads support Ethernet 10/100 Base-T Fast Ethernet connec-
tions with a data bandwidth of 10/100 million bits per second (Mbps). See Conguration in the Getting
Started chapter for information on Ethernet conguration via a USB or peer-to-peer Ethernet connection.
Note: When marking with FH Flyer in tethered mode (where the computer is sending mark data to
Flyer in real-time through a USB or Ethernet connection), you must consider Ethernet latency
issues when mark cycle times are very short (< 1 second) because the Ethernet protocol does not
always transmit data in real-time. Occasionally, a latency period up to 200 milliseconds (ms)
will occur between the time a ‘start mark’ signal is received and lasing begins. When this latency
period becomes a signicant portion of the cycle time, you should consider an isolated USB con-
nection or operate Flyer in stand-alone mode.
Ethernet port LEDs
Flyers Ethernet port contains two built-in miniature LEDs. The yellow LED is either O, which indicates
no Ethernet activity (or no connection), or is Blinking, which indicates there is Ethernet activity. The
green LED is either O, when there is no active WinMark Pro communication, or is On to indicate an
open WinMark Pro session.
SYNRAD FH Series Flyer Operator’s Manual Version 3.4
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