Arbiter Systems 1084B Opt20 UPGRADED GPS Clock LCD Display ST Fiber Optic IRIG-B [Refurbished]
( 363503786759) )
Tested/Guaranteed • Upgraded GPS Module • Latest Firmware • TCXO Oscillator • Option 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 used GPS disciplined master clock unit with
IRIG-B, Serial and 1 PPS outputs as well four optional ST
820nm optical outputs providing IRIG-B timecode. 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.
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 nowadays. 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 listings and use weasel words like "removed from a working installation", which translates as they've not bothered to do any testing, or they're off-loading the unit in the short window available before it fails. 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.
The remedy is to buy a clock that has a latest-generation GPS sub-system installed, as well as the latest firmware loaded in the clock unit. That way you'll be good for an accurate date for the best part of the next 20 years, assuming you and/or the clock are in service that long.
So before you buy a clock elsewhere, ask the seller for a photo of their clock showing the correct date and time. If they can't provide one then figure on dropping a hundred and fifty bucks on a new GPS card to be sent over from Asia, plus the ancillary interface board you'll probably need to install it, plus another hundred on the EPROM programmer needed to load the matching firmware.
Or you could just buy one that someone else has invested the time and effort to do all that work for you and who is willing to stand by their offer.
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
- 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