Teledyne Lecroy OE695G, Руководство оператора

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OE695G Optical-to-Electrical Converter
6
Reference Receiver
The OE695G contains optional, built-in software reference receiver filters for
common Fiber Channel, Ethernet, and ITU telecom standards. These
reference receiver filters provide a 4-pole Bessel Thompson low pass filter
response for the combined oscilloscope and optical-to-electrical (O-E)
system with the -3dBe (electrical) power at 0.75* bitrate.
Available reference receiver filters include:
8GFC (8.5 Gb/s)
10GBASE-W (9.953 Gb/s)
OC192 (STM64) (9.953 Gb/s)
10GBASE-R (10.3125 Gb/s)
10GFC (10.519 Gb/s)
ITU-T G.975 FEC (10.664 Gb/s) ITU-T G.709 FEC (10.709 Gb/s)
10 GbE FEC (11.096 Gb/s)
10GFC FEC (11.317 Gb/s)
User Defined (up to 11.5 Gb/s)
None (maximum 12.667 Gb/s)
The software reference receiver supplied standard with the OE695G is based
on a “nominal” oscilloscope response. The typical uncertainty in this
standard reference receiver frequency response is ±1.6 dBe up to Fref
=0.75*bit rate and ±4 dBe 2*bitrate setting.
An OE695G-REFCAL OE695G reference receiver calibration can be purchased
that will provide less uncertainty with the OE695G when used with a specific
oscilloscope and a specific channel. This REFCAL is usually purchased at
the time of initial OE695G and oscilloscope purchase. If this is the case,
Teledyne LeCroy will calibrate the specific OE695G to a specific serial
number oscilloscope channel (channel 4 unless otherwise specified) and the
resultant reference receiver uncertainty will be
±
0.85 dBe up to Fref =0.75*bit
rate, and ±4 dBe 2*bit rate setting on the specified oscilloscope input channel
on the 11, 17, 20, 30, 39, 50, 75, 90, or 100 mV/div gain ranges. The
calibration will be indicated on the OE695G dialog, shown above. Multiple
OE695G can be calibrated to unique oscilloscope channels to allow usage of
multiple OE695G.
NOTE: If the OE695G-REFCAL is purchased after the initial
OE695G/oscilloscope purchase, the oscilloscope must be returned to
Teledyne LeCroy for the OE695G-REFCAL to be performed.
A custom reference receiver (User Defined) can be applied for any bit rate up
to 11.5 Gb/s. Bit rates up to 12.5 Gb/s bit rates may be specified, but beyond
11.5 Gb/s, the reference receiver requirements cannot be maintained.