Sundance SMT321 - Manual (Page 7)

1 Introduction
1.1 Overview
The SMT321 is a single width TIM module. It is capable of generating:
•
two separate LVPECL triggers continuous or single pulse,
•
two separate analog test signals with the frequency depending on the VCO’s on
the board,
•
two separate LVPECL clock signals.
The triggers are generated by a Xilinx Spartan 3 FPGA (XC3S400 – TQ144) this FPGA
also controls all the control register settings via the Comports. The analog test signals
are generated by two separate VCO’s (Microwave Corporations UMS series of VCO’s)
for different frequency ranges. Finally the two clock signals are generated by Micrel high
frequency clock synthesizers.
1.2 Module Features
The main features of the SMT321 are shown in the following list.
•
Six seprate channels consisting of two triggers, two analog signals and two clock
signals.
•
Triggers range from 75Hz to 5MHz and the high and low time of each trigger is
programmable.
•
Each analog signal varies in frequency depending on the VCO mounted in the
channel. The VCO ranges available can be seen in Table 1.
•
Clock signals range from 50MHz to 950MHz.
•
Standard Sundance Comports for easy interconnection to other Sundance
products.
1.3 Related Documents
[1] TIM specifications.
ftp://ftp2.sundance.com/Pub/documentation/pdf-files/tim_spec_v1.01.pdf
[2] MICREL SY89430VZC and SY89429AZC specifications
http://www.micrel.com
[3] ANALOG DEVICES AD5235 specifications
http://www.analog.com