The PRL-172 is a ready-to-use TTL crystal clock source module with 50 Ω back terminated outputs, designed for driving long lines with or without 50 Ω terminations.
The PRL-172 converts the internal crystal clock frequency f into 4-Φ clock outputs of f, f/2, f/4, and f/8.
The maximum frequency output of the PRL-172 is 50 MHz, model number PRL-172-50. Standard crystal frequencies provided are 1 MHz, 2.5 MHz, 5 MHz, 10 MHz, 25 MHz, and 50 MHz. Other crystal frequencies are also available by special order, with a 3-digit suffix indicating the requested frequency of the un-divided "f" output.
Each clock source module is housed in a 1.3 x 2.9 x 2.9-in. extruded aluminum enclosure and is supplied with a ±8.5V AC/DC Adapter.
If mounting is desired, a pair of 35001420 mounting brackets can accommodate two PRL modules of the same length. A number of PRL modules can also share a single ±8.5V AC/DC adapter using the PRL-730 voltage distribution module. Please see the Accessories Section for more detail.
PRL-172 Block Diagram
(0° C ≤ TA ≤ 35° C)
|IDC||DC Input Current||260||300||mA||PRL-172-50|
|VDC||DC Input Voltage||7.5||8.5||12||V|
|VAC||AC/DC Adapter Input Voltage||103||115||127||V|
|tr/tf||Rise/Fall Times, (10%-90%)||2||3||ns|
|tSKEW||Skew between any two channels||750||1500||ps|
|fMAX||Max output frequency||50||MHz||Cable < 6'|
|Positive Duty Cycle||40||%||Measured @ 50%|
|Maximum cable length||100||ft||Output frequency ≤80 MHz|
|Size||1 x 2.9 x 2.9||in.|
|Weight, excl. AC adapter||5||Oz|
|Shipping weight, incl. AC adapter||4||lb.|