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Back to SBC 7000 Series CRUs

In this section:

Slots 1 through 4 of the

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chassis contains DSP-LC (Large Capacity) cards.

  • Each DSP-LC card contains 28 DSP Devices.
  • Each DSP Device contains 8 Core Signal Processors.
  • Each Core Signal processor can handle many simultaneous media streams of processing.

The DSP-LC product code is SBC-7000-DSP-LC.

SBC 7000 DSP-LC

Parts and Tools Required

The following items are needed to replace a DSP-LC card:

  • Electrostatic discharge (ESD) strap
  • Replacement DSP-LC
  • A #2 Phillips-head screwdriver

To prevent damage from electrostatic discharge, an ESD strap is provided in the accessory kit. See Connecting Electrostatic Discharge Wrist Strap on SBC 7000 to install it.

Replacing the DSP-LC Card

To replace a DSP-LC card:

  1. Disable the DSP-LC card via EMA GUI (All > System > Daughter Board Admin > State (Disabled)).

    Removing a disabled DSP card does not bring down the rest of the node (hot swappable).
    Removing an enabled DSP card is a hot pluggable action (the node restarts, which means that it stops providing service; this will cause a switchover to a HA peer, if present).

  2. Attach an Electrostatic Discharge wrist strap by using the ESD grounding point on the back panel of the chassis (see Connecting Electrostatic Discharge Wrist Strap on SBC 7000 for details).

  3. Unscrew the thumb screws using #2 Phillips-head screwdriver, open the release levers on each side and pull the DSP-LC card.

    SBC 7000 DSP-LC card pulled out

  4. To replace, insert the new DSP-LC card to the correct slot and push it completely.
  5. Close the release levers.
  6. Tighten the thumb screws using #2 Phillips-head screwdriver.
  7. Enable the DSP-LC card via EMA GUI (All > System > Daughter Board Admin > State (Enabled)).

CRU Storage

All

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CRUs are shipped in electrostatic discharge (ESD) bags and must be handled by using appropriate ESD precautions. The storage environment for these CRUs are:

  • Humidity must be less than 95% (non-condensing).
  • Temperature must be between -40C and +70C.

 

The ESD Susceptibility symbol warns of the presence of Ribbon devices susceptible to electrostatic discharge. Do not handle equipment without wearing a properly grounded ESD wrist strap.

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