Arbiter Systems 1084B Opt 27 8x IRIG-B UPGRADED ublox GPS Clock LCD Display 1PPS [Refurbished]

Tested/Guaranteed • Upgraded ublox GPS Module • Option 27 - 8x IRIG-B Outputs • Latest Firmware • TCXO Oscillator • LCD Display • Correct Date and DST Observance • Atomic Clock Time Receiver

Photos show the actual item for sale

Introduction

Here's a lightly used GPS disciplined TCXO master clock unit with IRIG-B, Serial and 1 PPS outputs and an optional 8x IRIG-B ports (ie. Arbiter Option 27) providing additional timecode feeds for downstream devices. The unit has been upgraded with a brand new latest generation GPS receiver from ublox giving super-quick signal lock (with a good antenna) and ensuring correct date display beyond 2035. The LCD display has a backlight (which is rare on these). It has been tested to confirm that it works as it should. 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. Operation from behind a windows is unlikely to be satisfactory. The antenna voltage is 5V so almost any professional GPS antenna of at least 26dB will suffice. The firmware has been upgraded to the latest version available at the time of listing. Full product details may be obtained from the user manual at https://www.prostudioconnection.net/1507/Arbiter_1084_Manual.pdf .

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.

The remedy is to buy a clock that has a latest-generation GPS sub-system installed, as well as the matching firmware chip 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 $250 on a new GPS receiver assembly, plus another hundred on the EPROM programmer needed to upgrade the matching firmware, assuming you can still find the blank chips. 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.

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 at
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

Description: Option 27 8-Channel High Drive IRIG-B Output

Option 27 provides eight independent, IRIG-B buffered outputs, each capable of driving multiple loads. Outputs are short circuit and surge protected. Each output is individually configurable for either modulated or unmodulated IRIG-B signals via jumper settings.

Specifications
Output Selection: Each output is jumper selectable for either a Modulated or Unmodulated signal.
Number of Channels: Eight (8).
Signal Levels:
Modulated: 4.5 Vpp with 20-Ohm source impedance; each channel will drive a 50-Ohm load to 3 Vpp minimum
Unmodulated: + 5-V open-circuit; + 4 V minimum at 250-mA load load current each channel will drive 25 Schweitzer SEL-3xx (in parallel) or 50 SEL-2xx (in series/parallel) relays at 10 mA per relay.
Maximum Load (per driver):
Modulated: No Limit: will drive a short circuit.
Unmodulated: 250-mA peak current; pulse-by-pulse shutdown if load current exceeds internal limit (self-resetting).
Output Connector: 16-position pluggable 5-mm (Phoenix-type) terminal strip with eight 2-position mating connectors.