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The Agilent 83494A is a plug-in optical clock recovery module that extracts a precise timing reference from high-speed optical data streams. Installed in a compatible Keysight Infiniium DCA mainframe, it locks onto incoming SONET/SDH rates up to 10 Gb/s and delivers a low-jitter recovered clock for accurate signal analysis.

• Locks to all SONET/SDH data rates through 10 Gb/s (including 9.953 Gb/s)

• Derives its clock internally from the signal under test when no external trigger is provided

• Provides a clean, low-jitter clock output to the DCA mainframe’s measurement circuitry

• Enables precise eye-diagram generation, jitter decomposition, and timing analysis

• Supports optical input power from –14 dBm to +3 dBm (≤ 2.488 Gb/s) and –8 dBm to +3 dBm (≥ 9.953 Gb/s)

Technical Description

Agilent 83494A Single-Mode Optical Clock Recovery Module for Keysight Infiniium DCA Mainframes

Wavelength range: 1200 – 1600 nm over 9/125 µm fiber
Data rate support: locks to all SONET/SDH rates up to 10 Gb/s, including 9.953 Gb/s
Jitter performance: ultra-low jitter for precise waveform display
Timing reference: internal PLL derives clock from the signal under test when no external trigger is available
Input power range: –14 dBm to +3 dBm at ≤ 2.488 Gb/s; –8 dBm to +3 dBm at ≥ 9.953 Gb/s
PLL bandwidth: 90 kHz in internal trigger mode; 4 – 5 MHz in external output mode
Compatible mainframes: Keysight Infiniium DCA-J/C/X families (86100A/B, 86100C, 86100D) and legacy 83480A DCA