Symmetricom 59552A, User Manual, Page: 50 / 52

Chapter 4 Specifications
Introduction
4-4 User’s Guide
59552A Fiber-Optic
Distribution Amplifier
Inputs:
One digital input typically used as
1 PPS input
One analog input typically used as
IRIG-B123 input
Digital input
Input signal requirements: TTL
Input impedance: 50
Ω
to GND
(default) or 1 k
Ω
to +5 volts
configurable with internal
jumper
Analog input
Input signal requirements:
5 volts peak-to-peak (nominal)
Input impedance: 600
Ω
(default) or 10 k
Ω
configurable with internal
jumper
Outputs:
Number of optical outputs: 8
Optical connector: metal ST
Front-panel LEDs indicating:
• Power
• Digital input active
• Analog input active
Note that annunciator is
activated at a minimum voltage
of 1.6 volts pk-pk (nominal)
Power Requirements:
ac Power: 90 to 132 Vac or 198 to
264 Vac, automatically selected;
50 to 60 Hz
or
dc Power: 129 Vdc, 115 to 140 Vdc
operating range
Dimensions:
Height: 88.5 mm
Width: 212.6 mm
Depth: 348.3 mm
Weight: 3 kg
Half-Rack module
59553A Fiber-Optic
Receiver
Inputs:
Number of optical inputs: 1
Optical connector: metal ST
Outputs:
One digital output typically used as
1 PPS output
One analog output typically used as
IRIG-B123 output
Digital output
Output signal: TTL
Output impedance: drives 50
Ω
to GND
Analog Output
Output signal:
5 volts peak-to-peak (nominal)
Output impedance: drives 600
Ω
to GND
Front-panel LEDs indicating:
• Power
• Digital input active
• Analog input active
Note that annunciator is
activated at a minimum voltage
of 1.6 volts pk-pk (nominal)
Power Requirements:
ac Power: 90 to 132 Vac or 198 to
264 Vac, automatically selected;
50 to 60 Hz
or
dc Power: 129 Vdc, 115 to 140 Vdc
operating range
Dimensions:
Height: 87.1 mm
Width: 133.2 mm
Depth: 185.3 mm
Weight: 0.91 kg
Fiber-Optic Cable Core Size
Recommendations:
62.5/125 µm
Ordering Information
59552A
59553A
*129 Vdc operation
*59552A and 59553A come standard with
110, 240 Vac. For use with 129 Vdc
power, assemble and connect your own
cable assembly using the supplied dc
connector plug (1252-5672). See
instructions in Chapter 1.