• Clock frequencies: 50, 80, 100, or 125 MHz
• Number of output bits/channels: 12, 16, or 24
• Program memory space: 512 or 32k 80-bit words
  
  More about PulseBlaster-PCI

• High speed - Up to 400 MHz clock frequency
• 24 independently controlled output channels
• 4 BNC bracket mounted connectors
• 50 ohm impedance matched outputs
• Programmable pulses from 3 ns to 20 us per instruction

More about PulseBlaster ESR-PCI

• Timing resolution of 10 ns at a 100 MHz master clock (NOTE: Timing resolution of 2.5 ns is available on non-DDS, TTL-only PulseBlasterESR boards operating up to 400 MHz).
• Simple instruction set.
• Memory space for up to 32k program words (VLIW, 80-bit wide).
• 3.3 V or 5 V (ISA boards only) digital TTL/CMOS outputs, 25 mA per pin.  Output bits can be combined to increase the max. load current.
  Multi-board synchronization
  
  More about PulseBlasterDDS-III-100