There are two different memory expansion boards available for Hirsch controllers: the MEB/CB64and the MEB/CB128.
The MEB/CB64 supports 64,000 user records, expands the alarm and event buffers, or provides a combination of both records and buffers. This means that a portion of memory can be allocated to storing users while the remainder is used for buffering events. Normally, it takes twice as much space to store a user profile as it does to store an event (for example, the board can store two users or four events). Hirsch’s velocity security management program supports an option to allocate 20% of the board to alarm/event buffer usage. This option is irreversible.
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Figure 3-1: Memory Expansion Boards (MEB/CB128 and MEB/CB64)
The newer CCM V7.0 can diminish the number of events that an expansion board can successfully buffer, because the event string is up to four times longer. For example, a buffer that could comfortably store 4,000 events with the previous CCM (V6.6 and earlier) now buffers only 1,000 events using the V7.0 CCM.
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The MEB/CB64 and MEB/CB128 boards provide an Mx or Mx-1-ME controller with enhanced capacity to store events and codes.
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