
12778474-002-2 Revision F – March 2004
TSG-3800 User’s Guide 225
Output Modules
ESF/D4 10-Output Module
Power A and B on the main shelf provide power to the module. These redundant
sources of –48 vDC are diode-coupled and fused, allowing the module to draw
power from either source. The internal fuse labeled F1 protects the circuitry from
excessive current. The DC-to-DC Converter changes the negative voltage into +5
vDC; the green POWER indicator on the front panel is lit when either power source
is available to the module. The POWER indicator turns off when power is lost, for
example if the fuse on the module opens, if both –48 vDC power inputs are lost, or if
the converter fails.
Specifications
The functional specifications of the ESF/D4 10-Output module are listed in
Table
7-12
.
Configuring the ESF/D4 10-Output Module
This section describes how to configure the ESF/D4 10-Output module to meet the
requirements of your particular installation.
Table 7-12. ESF/D4 10-Output Module Specifications
Signal Characteristic
Specification
Signal
DS1, D4 Framing, All ONEs Data
Waveshape
Rise Time
Pulse Width
Pulse Interval
Duty Cycle
Per ANSI T1.102-1987
< 100 ns
324 ns, nominal
648 ns, nominal
50%
Amplitude
3
±
0.6 V, peak-to-peak
Overshoot
≤
10%
ο
f peak-to-base amplitude
Jitter
< 0.03 UI
Long-term Frequency Error
Exceeds MTIE criteria defined in ANSI T1.101-1987
Clock Performance
Meets SONET requirements per ANSI T1.105-1988
Drive Capability
0 to 655 feet (197 m)
Termination Impedance
100 to 120
Ω
±
5%
Number of outputs
10
Caution:
To prevent ESD damage to the module, always observe the
precautions described in
Properly Handling the Modules
, on page 61.
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