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Talon RTX 2767 Operating Manual
Chapter 3: Pentek Board I/O Connections
The Talon RTX 2767 system uses Pentek Cobalt Model 78651 and 78671 PCIe boards.
This chapter describes the connections and LEDs on these boards. More information
about these boards can be found in the following manuals:
• Model 71650 Operating Manual (800.71650)
• Model 71651 Addendum Manual (800.71651)
• Model 71670 Operating Manual (800.71670)
• Model 71671 Addendum Manual (800.71671)
• Model 78651 Installation Manual (800.78651)
• Model 78671 Installation Manual (800.78671)
3.1
Pentek Cobalt Model 78651 Input and Output Connections
Model 78651 provides six SSMC coaxial connectors for input/output of clock and
analog signals, and a 26−pin sync bus input/output connector. These connectors are
described in the following subsections.
3.1.1
3.1.2
3.1.3
Clock Input Connector − CLK
Model 78651 has one SSMC coaxial connector, labeled CLK, for input of an
external sample clock. The external clock signal must be a sine wave or
square wave of +0 dBm to +12 dBm, with a frequency range from 10 to 500
MHz.
Trigger Input Connectors − TRIG
Model 78651 has one SSMC coaxial connector, labeled TRIG, for input of an
external trigger. The external trigger signal must be an LVTTL signal.
NOTE:
The TRIG input is 5V tolerant but it must NOT have any negative
voltage applied.
Analog Output Connectors − OUT 1, 2
Model 78651 has two SSMC coaxial connectors for analog signal outputs,
labeled OUT 1 and 2: one for each DAC5688 output.
The analog output signal is within the range of +4 dBm. This output is
driven by an RF transformer into 50 ohm output impedance.
Page 13
Rev.: 1.0
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