The PRL-174NT-1400 is a manually programmable clock source module. The internal VCO clock frequency f, variable from 700 MHz to 1.4 GHz, is divisible from 2 to 256, inclusive, using D1 through D8 of a 9-position DIP switch. D9 further divides the f/n outputs by 2, extending the maximum division to 512, and providing square wave outputs. A table showing all the possible division ratios is
provided in the datasheet. The internal VCO frequency is continuously variable over one octave range using a front panel control. Standard maximum VCO frequency is 1.4 GHz. Other VCO frequencies are available on special order.
The PRL-174NT-1400 has complementary NECL f/1 outputs and complementary NECL and TTL f/n outputs. The NECL outputs are designed for driving 50 Ω loads terminated into -2 V, and they can also drive AC coupled or floating 50 Ω loads. The 50 Ω back-terminated TTL outputs can drive long 50 Ω lines with or without 50 Ω terminations. PECL or LVPECL f/n outputs are available (instead of TTL) by special order.
Applications of the PRL-174NT-1400 include precision clocks for high speed digital systems, low jitter clock source for testing A/D's, SONET Clock generator, and
Mini Modular Instrument for working with high speed NECL and TTL/CMOS circuits.
The PRL-174NT is housed in a 1.3 x 2.9 x 8-in. extruded aluminum enclosure and is supplied with a
±8.5 V, +17 V AC/DC Adapter.
Related and Complementary Products:
- PRL-SC-104, DC Block, 0.1 µf
- PRL-SC-225, DC Block, 2.2 µf
- PRL-FTC-104, Feedthru Decoupling Cap, 0.1 µf
- PRL-FTR-50, Feedthru 50 Ω
- PRL-ACT-50, Dual Ch. AC Coupled 50 Ω Termination
- PRL-ACX-12dB, AC Coupled 12dB (4X)
- Mounting Brackets, for
mounting to flat surfaces
- Voltage Distribution
Modules, for sharing AC adapters among multiple modules
- Cables, various lengths
of RG-174 50 Ω coax with SMA plugs