Explore the Meridian Precision GPS TimeBase Point at the features to learn more or click to view front panel or view inside.

Power Entry Module This is the high-performance power supply module.  Meticulous thermal management and high-end Vicor modular converter technology give you a fully loaded chassis that can operate over the full 0C to 50C ambient temperature range without chassis fans or ventilation holes.  Both of these are undesirable in precision frequency control products.  Fans induce vibration, which degrades phase noise, and they fail eventually.  Vent holes allow dirt to be drawn inside to settle on sensitive components, and they allow air currents to degrade the stability of non-ovenized oscillators.

Telecom Clock Output Module This optional module adds two outputs that can be any combination of E1, T1 or Composite Clock.  This particular Telecom Clock Output Module includes an Alarm Output that provides alarm relay contacts for major, minor and critical conditions.

Telecom Clock Output Module This optional module adds two outputs that can be any combination of E1, T1 or Composite Clock.  To meet the jitter/wander mask requirements for telecom applications your Meridian must have an OCXO or rubidium oscillator, which takes one slot.  Up to eight telecom clock outputs can be provided in the remaining four slots.

Programmable Digital Buffer Module This optional module adds four individually programmable TTL outputs to your Meridian TimeBase.  These buffered outputs provide on-time pulse rates from 1 PPS to 10 MPPS, or a digital timecode output.  Your Meridian can provide up to 22 TTL pulse rate outputs if desired. An additional upgrade configures the Meridian with a Direct Digital Synthesizer (DDS) that provides pulse rates from 1 PPS to 10 MPPS in 1 PPS steps, including 1.544 MPPS or 2.048 MPPS.

Low Phase Noise Output Module This optional module works in conjunction with the Oscillator/Low Phase Noise Module to the right and provides four additional low-phase-noise outputs.  The Meridian can support four of these modules plus the Oscillator/Low-Phase-Noise Module to output a total of 20 low-phase-noise outputs.

Oscillator/Low Phase Noise Output Module This optional module configures the Meridian with several different 10 MHz oscillators.  Medium and High-Stability OCXOs plus Rubidium oscillators are available.  Up to 20 low-phase-noise outputs work with these high-performance oscillators to provide individually buffered, spectrally pure, sinewave outputs with high channel-to-channel isolation. Shown is the EndRun Technologies High-Stability OCXO.  Included on this module are four low-phase-noise outputs.

CPU/Receiver Module This module is the brains of the Meridian and performs the GPS Receiver/Timekeeping processing and provides the user I/O features:  1PPS, Timecode, Ethernet, RS-232, Programmable TTL Pulse Rates, DDS Rates, Sysplex Timer Output and more. A dual-processor system places the time-critical GPS Receiver/Timekeeping tasks in an ARM RISC microcontroller and the Network/Local User Interface tasks in an AMD 133 MHz ElanSC520 x86 processor.  All non-volatile storage is FLASH-based so software upgrades are easy to do.