CDM-5 Clock Distribution Module

CDM-5 Clock Distribution Module

PCIe card providing 10MHz and 1PPS signals for up to five devices Buy It Now

Orolia’s CDM-5 clock distribution module is a PCIe card that provides 10MHz and 1PPS signals for up to five devices that need tight and precise synchronization. The clock distribution module is ideal for PCIe-based Software-Defined Radios (SDR) installed in rack-mount or desktop PCs, and can also be used for any other applications that require a precise PC-based timing reference.

Two operating modes

The CDM-5 clock distribution module features two operating modes—internal or external— that are selected with the bracket-mounted switch.

In internal mode, the CDM-5’s internal clock signal is extracted from the onboard high-grade oven-controlled crystal oscillator (OCXO).

When operating in external mode, the CDM-5 accepts input signals in the form of 10MHz and 1PPS, which are then re-distributed via five matched-length traces. Split signals are amplified to maintain the power level across all distributed paths.

Additionally, the CDM-5 will regenerate 1PPS from an external 10MHz-only source if a 1PPS source is not available.

The selection between internal or external mode is achieved through the bracket-mounted switch.

Integrate it in your own design

The CDM-5 clock distribution module can be integrated into a custom assembly simply by removing the bracket plate and powering the board through its 12V DC connector.

When the bracket is removed, the operating mode can be toggled using the onboard switch.

Key Features:
  • Timing and frequency source with 5-way distribution of 10MHz and 1PPS signals
  • PCIe form factor for rack-mount or desktop PC
  • Two operating modes: internal clock (OCXO) or external clock (10MHz and 1PPS)
  • Supports standalone operation with 12V DC power supply

Documentation and Support

Skydel CDM-5 Datasheet
pdf (672KB)
Skydel Datasheet
pdf (538KB)
Testing and Simulation Overview
pdf (3,054KB)
GNSS Testing & Simulation Solutions for Space Applications
pdf (1,157KB)

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