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HFCT-5915E PDF даташит

Спецификация HFCT-5915E изготовлена ​​​​«Hewlett-Packard» и имеет функцию, называемую «MT-RJ Duplex Single Mode Transceiver».

Детали детали

Номер произв HFCT-5915E
Описание MT-RJ Duplex Single Mode Transceiver
Производители Hewlett-Packard
логотип Hewlett-Packard логотип 

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HFCT-5915E Даташит, Описание, Даташиты
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Agilent HFCT-5915E Characterization
Report for MT-RJ Duplex Single Mode
Transceiver
Application Note 1209
Introduction
The HFCT-5915E transceiver is a
high performance, cost effective
module for serial optical data
communication applications
specified for a signal rate of
155 Mb/s. It is designed to provide
an ATM/SONET/SDH compliant
link for 155 Mb/s long reach
applications over 0°C to +70°C
temperature range. The module is
intended for single mode fiber,
operates at a nominal wavelength
of 1300 nm and is packaged in an
industry standard 2 x 5 platform.
It incorporates Agilent’s high
performance, reliable, long
wavelength optical devices and
proven circuit technology to give
long life and consistent service.
The characterization was
performed in accordance with
Bellcore Specification
TA-NWT-000983.
Summary
• The characterization
demonstrates that the
HFCT-5915E complies with the
Product Specification
• HFCT-5915E - SONET OC3 SDH
STM-1 Compliant
This report evaluates the
HFCT-5915E transmitter
performance under all conditions
against target parameters in the
Product Specification.
The HFCT-5915E receiver
characterization has been
completed by claimed similarity
with the HFCT-5905E, due to
common optical subassembly,
electrical assembly and package
style. The results of the HFCT-
5905E receiver characterization
are included here from
Application Note 1181 for
completeness.
The following transmitter
parameters were characterized at
3.1 V, 3.3 V and 3.5 V at 0°C, +25°C
and +70°C:
Output Power
Extinction Ratio
Transmitter Supply Current
Wavelength
Spectral Width
Eye Mask
SONET/SDH compliant eye
diagrams are also presented.
Definition of terms
Transmitter Parameters
Output Power (dBm)
The optical output power is an
averaged measurement using a
1 m MT-RJ patchcord terminated
with an SC connector into a large
area detector. This measurement
allows for the loss of the MT-RJ
Connector. The module was
modulated at 155.52 Mb/s using a
2E23-1 PRBS data pattern .
Extinction Ratio (dB)
This is the ratio of optical power
in a 1or onlogic state to the
optical power in a 0or offlogic
state. The Extinction Ratio is
measured using a 1010... data
pattern at 50 MHz. This gives a flat
top and bottom to the output
pulse in order to make accurate
measurements.
Transmitter Supply Current (mA)
This is the current supplied to the
transmitter at the relevant supply
voltage including that drawn by
the test fixture but excluding that
drawn by the termination
resistance network.









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HFCT-5915E Даташит, Описание, Даташиты
Wavelength (nm)
The mean wavelength is measured
on an optical spectrum analyzer.
The transmitter is modulated with
a 2E23-1 PRBS at 155.52 Mb/s.
Spectral Width (nm)
Spectral width is defined as the
RMS width containing all modes
with energy greater than 20 dB
down from the peak wavelength.
Transmitter Power Supply Noise
Rejection
Modules were measured using test
fixtures fitted with the power
supply filter shown in Figure 1.
Wideband noise was introduced
through a signal generator and the
optical eye was viewed using an
Agilent 83480A Digital
Communications Analyzer with a
SONET/SDH eye mask applied.
The noise to the device is
increased until the eye mask
margin is reduced to 20%.
Receiver Parameters
Sensitivity (dBm)
This measures the receiver
sensitivity with a 2E23-1 PRBS
input signal. The sensitivity is the
minimum optical input power
required so that the receiver can
recover a signal with an error rate
better than 1e-10.
SD Deassert and Assert Times
(µs)
The time taken for a high to low
transition or a low to high
transition after the optical input
signal is removed or applied
respectively. Measured with
-7 dBm of optical power at the
receiver input. Table 2 shows that
Signal Detect Assert and Deassert
times are within data sheet
specifications.
Receiver Power Supply Noise
Rejection
Modules were measured using test
fixtures fitted with the power
supply filter shown in Figure 1.
Wideband noise was introduced
through a signal generator and the
receiver measured for 1 dB
sensitivity degradation.
J1
VCCT
J3
VEET
J2
VCCR
J4
VEER
C7
100 nF
L1 1 uH VCCT
+ C10
10 uF
GND
C9
100 nF
L2 1 uH VCCR
+ C8
10 uF
GND
Overload (dBm)
The maximum optical signal
power to the receiver such that
the recovered data has an error
rate of 1e-10. This parameter was
checked at 155.52 Mb/s using a
2E23-1 PRBS pattern. All receivers
operate with a 8 dB margin above
G.957 (-8 dBm).
C1
100 nF
VCCT
GND
C2
100 nF
VCCR
GND
Receiver Supply Current (mA)
This is the receiver supply current
at the stated supply voltage
excluding that drawn by the
termination resistance network of
the evaluation board.
Signal Detect Levels (V)
This is the measured voltage
through 50 ohms, referenced to
VCC -2 V at the signal detect
output. Signal Detect is High
during an ONstate and low
during an OFFstate. Table 1
shows that Signal Detect levels are
within data sheet specifications.
Signal Detect Deassert (dBm)
This is the point at which the signal
detect flags low to indicate a loss
of signal due to low optical power.
2
Figure 1. Multi Source Agreement Power Supply Filter
Table 1 - HFCT-5915E Signal Detect voltage levels with respect to VCC.
Units Mean
SD Low V
SD High V
-1.80
-1.01
Min.
-1.78
-1.00
Max.
-1.82
-1.02
Product Specifications
Min. Max.
-1.84 -1.62
-0.88 -1.05
Table 2 - HFCT-5915E Mean, Minimum and Maximum Signal Detect Assert
and Deassert times over temperature and voltage
Test Parameters
SD Assert
SD Deassert
Units Mean Min.
µs 73.0 67.0
µs 3.5 3.0
Max.
78.1
3.5
Limits
Min.
-
-
Max.
100
-









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HFCT-5915E Даташит, Описание, Даташиты
Results Summary
Voltage Dependence
One of the objectives for this
characterization exercise was to
assess the influence of voltage
supply variation on transceiver
performance. The summary of
results shown in Tables 3a and b
indicate that the HFCT-5915E has
negligible dependence on supply
voltage (within the limits of 3.1 V
to 3.5 V) for parameters over the
operating temperature range.
As such there is sufficient
confidence in evaluating
remaining characterization parts
under nominal 3.3 V voltage
supplies over its rated operating
temperature range.
Table 3a - HFCT-5915E Mean, Minimum and Maximum measured parameters
over operating temperature at 3.3 V
Test Parameters
Transmitter
Supply Current
Output Power
Extinction Ratio
Receiver
Supply Current
Sensitivity
SD Deassert
SD Hysteresis
Units
mA
dBm
dB
mA
dBm
dBm
dB
Measured
Mean
Minimum Maximum
73 52 101
-2.58 -4.17 -1.53
13.6 10.7 16
70.1 63.1 82.1
-38.9 -39.7 -37.0
-42.5 -43.8 -40.0
2.2 2.0 2.4
Table 3b - HFCT-5915E Mean, Minimum and Maximum measured parameters
over operating temperature and voltage (3.1 V, 3.5 V excluding 3.3 V)
Test Parameters
Transmitter
Supply Current
Output Power
Extinction Ratio
Receiver
Supply Current
Sensitivity
SD Deassert
SD Hysteresis
Units
mA
dBm
dB
mA
dBm
dBm
dB
Measured
Mean
Minimum Maximum
73 51 102
-2.57 -4.16 -1.52
13.6
10.33
16
71.2 61.6 84.8
-38.9 -39.8 -37.0
-42.5 -43.8 -40.1
2.2 2.0 2.5
3










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