Arbiter Systems 1084B Opt20 UPGRADED GPS Clock LCD Display ST Fiber Optic IRIG-B [Refurbished]

Tested/Guaranteed • Upgraded ublox GPS Module • Latest Firmware • TCXO Oscillator • Option 20A/20 - Quad Fiber Optic IRIG Outputs • LCD Display • Correct Date and DST Observance • 110-240V AC Power • Atomic Clock Time Receiver

Photos show the actual item for sale

Here's a lightly used GPS disciplined master clock unit with IRIG-B, Serial and 1 PPS outputs as well four plus one optional ST 820nm optical outputs providing IRIG-B timecode (Arbiter Options 20A & 20). A factory-fresh latest-generation high sensitivity ublox GPS module has just been installed and this achieves sync to GPS within seconds of power up (with a good antenna). The new GPS receiver will show the correct date beyond 2040. It also has Option 19 - a second RS-232 port - installed. The unit comes with a basic indoor antenna so it will acquire time for you right out of the box (when the antenna has a clear view of the sky when placed outdoors - indoor performance by a window is not guaranteed). The included antenna is intended to get you started and to allow you to check out the unit the day it arrives. A weatherproof external antenna with a full view of the sky is recommended for a permanent installation and for achieving the highest level of time accuracy as the unit will need to track 4+ satellites to achieve this - and I usually have some listed separately that would be ideal. Feel free to ask if you need a recommendation. Alternatively you can choose your own antenna as any 5V L1 antenna should work well. The photos show the actual item for sale.

Important...

This item includes an updated GPS card to replace the now-obsolete model originally installed by the factory.

There's a reason why you can find a lot of Arbiter GPS clocks being sold cheaply. That's because nearly all have failed GPS receiver cards that are reporting the wrong date (ie. nearly 20 years in the past). Sadly most other sellers somehow neglect to mention this in their enthusiasm to sell you a failed device. For the buyer, there's nothing more disappointing than finding after you've gone to all the trouble of rigging up your outdoor GPS antenna that the "precision" clock you just bought can't even show the right date. So before you buy a clock elsewhere, ask the seller for a photo of their clock showing the correct date and time.

The unit has been tested to confirm that it works as it should, including showing the correct date. The unit comes with a basic antenna to allow you to test the unit immediately upon receipt. For a permanent installation an outdoor antenna with a full view of the sky will be required. The antenna voltage is 5V so almost any professional GPS antenna will suffice. The firmware has been upgraded to the latest version available at the time of listing so you will have no issues with the 2019 Week Number Rollover and the 2007 DST pattern.

Description

Focused on high performance and maximum value, the Model 1084B delivers high end time-keeping results.

Three BNC connectors deliver several output options supporting IRIG-B modulated, and various combinations of IRIG-B unmodulated, Programmable Pulse (supporting multiple output modes) and 1 PPS. All are high drive outputs capable of driving multiple loads wired in parallel.

Full details may be obtained from the User Manual
(https://www.prostudioconnection.net/1507/Arbiter_1084_Manual.pdf)

Features

• Highest accuracy, < ± 40 ns typical; < ± 100 ns worst case
• Three BNC output connectors
• Two Form C (SPDT) fail-safe relays, locked and jumper selectable
• Event input support
• Four LEDs for monitoring operating status.
• LCD display and keypad, providing easy access to setup and system status information.
• IEEE C37.118 compliant for Synchrophasor use