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9.6.2
LED driver signals
Fault and Active LED signals are located in the FC-SCA connector (J1). See Table 35 for the output character-
istics of the LED drive signals.
Table 35:
LED drive signal
State
Current drive available
LED off, high
0 < I
LED on, low
I
OL
9.6.3
Differential PECL output
The serial PECL output signal voltage characteristics are provided in Table 36. The outputs are not AC coupled
in order to deliver maximum signal without rise and fall time degradation. You must AC couple the receiver to
isolate potentially different DC characteristics of the outputs and the receiver.
Table 36:
Differential PECL output characteristics
Description
Serial output voltage swing
Figure 12 provides the data output valid eye diagram relative to the bit cell time. Table 38 lists the data values.
Figure 12.
Transmit eye diagram
9.6.4
Differential PECL input
The serial PECL input signal voltage characteristics are provided in Table 37.
Table 37:
Differential PECL input characteristics
Description
Serial input voltage swing
68
< 100µA
OH
< -30 mA
Parameter
600 < V
< 1300 mV
out
Bit Time
XMIT Eye
Parameter
400 < V
< 2.000 mV
in
Output voltage
0 < V
< 0.8V
OL
Notes
AC coupled
NL35 Series FC Product Manual, Rev. D
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