Model 1094B GPS Substation Clock (250 ns)

Includes the most commonly requested features and accuracy ratings for typical substation applications, all at a competitive price point.

Model 1094B User manual
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Model 1094B Data Sheet
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Combining world-class accuracy with value pricing, Model 1094B delivers as standard the most commonly requested features for substation applications in Arbiter's line of precision timing products.

Standard features include a 12 channel GPS receiver with typical accuracy to <100ns, two serial communications ports, and four standard outputs supporting both BNC and 5 mm terminal strip connections, selectable to output IRIG-B, 1 PPS or programmable pulse A or B functions.

Able to output 5 Vdc, the unit can easily drive multiple loads in parallel, including synchrophasors. GPS Data Back Up battery capable of maintaining the real-time clock, almanac and ephemeris data in the case of power loss.

Key Features
Specifications
Options
Accessories
Related Resources

Accuracy <100 ns Typical; <250 ns worst case
Four outputs configurable for BNC or 5mm terminal strip connectors
One Form C (SPDT) fail-safe relay
Two RS-232 and RS-422/485 ports available

Receiver Characteristics

Timing Accuracy

Accuracy Note	Specifications apply at the 1 PPS output, in the presence of Selective Availability (SA), as of date of publication.
Accuracy UTC/USNO	±250 ns peak; <100 ns typical (SA off)

Satellite Tracking

Twelve (12) channel, C/A code (1575.42 MHz). Receiver simultaneously tracks up to twelve satellites.

Acquisition

150 seconds typical, cold start
15 minutes, 90% confidence, cold start
40 seconds, with almanac less than 1 month old
15 seconds, with ephemeris less than 4 hours old

I/O Configuration

Output Connectors

Four, each with BNC and 5 mm pluggable terminal strip in parallel.

Output Signals

Jumper selectable to high-drive 5 Vdc (250 mA at > 4 V) selectable to:

IRIG-B00x level-shift,1 PPS orProgrammable Pulse A or B
IRIG-B12x modulated
300 volt MOSFET output.

The MOSFET output is selectable to the same functions as the high drive 5 Vdc output. The MOSFET output is not electrically isolated from instrument common.

Input Connectors

Event A Input:

One opto-isolated event capture input with 100 ns resolution, BNC connector jumper-configurable to 5 to 12, 24 to 48 and 120 to 240 Vdc nominal input. Event input is also jumper-configurable to COM 1 and COM 2 RXD line.

Programmable Pulse Output

Two programmable pulse outputs, PPA and PPB. PPA is available (by a jumper connection) on outputs 1, 2 and COM 1 pin 4 (RS-232) and pins 8 and 9 (RS-485). PPB is available (by a jumper connection) on outputs 3, 4 and COM 2 pin 4 (RS-232) and pins 8 and 9 (RS-485).

Six modes:

Every 1 to 60,000 seconds, starts top of the minute
Hourly at a specified offset
Daily at a specified time of day
One shot at a specified time of year
1 to 1000 PPS squarewave (PPB only)
Aux IRIG Mode (PPB only)

Pulse duration is programmable from 0.01 to 600 seconds, except in one-shot mode, where the output is Low prior to the specified time and High thereafter.

Relay Contacts

One, Form C (SPDT) fail-safe, 0.3A at 130 Vdc; jumper selectable to Fault, Unlocked, or Programmable Pulse A (PPA) functions. Fail-safe means the relay indicates "fault" or "unlocked" condition with power off.

Interface

Operator

Display	2 x 20 character supertwist LCD White LED backlight
Functions	Time: UTC or local Position: latitude, longitude, elevation Clock status 1 PPS (input) deviation Event time
Status LEDs	Operate (green) Stabilized (green) Unlocked (red) Fault (red)
Keyboard	Eight keys
Setup	Local time offset IRIG-B: Local/UTC/1344 Daylight Saving Time: On/Off/Auto Backlight control: On/Off/Auto Event input: Event/1 PPS deviation Programmable Pulse setup Antenna cable delay Out of lock time: 1 to 99 minute(s), Off, or Zero Delay Auto-Survey Serial port: RS-232

System

RS-232	1200 to 38,400 baud; 7 or 8 data bits; 1 or 2 stop bits; even/odd/no parity
RS-422/485	Transmit only, to drive multiple devices. Two outputs. Uses extra pins on Com 1 and Com 2.
Broadcast modes	Standard ASCII (IRIG-J) Extended ASCII ASCII with Time Quality ASCII with Time Quality and Year Vorne large-display time Status Event
Connector	2 Male 9-pin D-sub Com 1 and Com 2(TXD, RXD, AUX IN, AUX OUT)

Power Requirements

Standard

Voltage	85 to 264 Vac, 47 to 440 Hz, 20 VA maximum or 110 to 350 Vdc, 15 W maximum
Inlet	IEC-320 with fuse and mating cordset. Specify option P01 - P10 Available cordset plug style and specifications are described in the Options and Accessories section.

General

Physical

Size	1 RU rack mount or tabletop, 260 mm deep FMS, Rack mounts included. 508 x 381 x 203 mm (20 x 15 x 8 in.), shipping
Weight	2 kg (4.5 lbs), net 5.5 kg (12 lbs), shipping
Antenna	Cable Connection: F-type Size: 77.5 dia. x 66.2 mm (3.05 x 2.61 in.) Weight: 170 grams (6.0 oz)
Antenna Cable	Type: RG-6, 15 m (50 ft) provided Weight: 0.69 kg (1.52 lbs) per 15 m
Mounting	0.75 in. pipe (1 in. - 14 marine) thread

Environmental

Temperature	Operating: 0 °C to +50 °C (-20 °C to +70 °C typical) Nonoperating: -40 °C to +85 °C
Humidity	Noncondensing
EMC	Radiated susceptibility: passes walkie-talkie test. Conducted emissions: power supply complies with FCC 20780, Class A and VDE 0871/6.78 Class A. Surge withstand capability (SWC), power inlet: designed to meet ANSI/IEEE C37.90-1 and IEC 801-4

Certificates and Approvals

CE mark/label and certificate

The available power options are listed below and are described in the Options and Accessories section, see our Product Catalog.Options and Accessories Options and Accessories section.

General
1094Bopt01 ¹	LCD Backlight
Power (select only one)
1094Bopt07	IEC-320 Power Inlet 85 to 264 Vac RMS, 110 to 370 Vdc
1094Bopt08	10 to 60 Vdc Terminal Power Strip and Surge Withstand
1094Bopt10	85 to 250 Vac RMS, 110 to 350 Vdc Terminal Power Strip and Surge Withstand

¹ Comes standard with unit

Included
AS0028200	Rack Mount Kit
AS0083400	Operation Manual (1094)
AS0087800	Arbiter Universal GPS Antenna
CA0021315	15 m (50 ft) RG-6 Antenna Cable
P01-P10 ¹	Country specific power cord with straight female end Country specific plug and power cord cable with straight female end.
Available
AP0003400	BNC (Male) Breakout to 100mm Wires
AP0008900	BNC (Female) Breakout to 100mm Wires Converts any terminal strip output to BNC.
AS0033100	Rack Slide Kit
AS0044600	GPS Antenna Mounting Kit
AS0044700 ²	21 dB In-Line Pre-amplifier Adds a minimum of 21 dB of gain at the GPS L1 frequency (1.575 GHz), when used with Arbiter Systems GPS-Controlled Clocks.
AS0044800	RG-11 Crimp Tool + 25 F-type Connectors
AS0048900	Antenna Grounding Block Kit
AS0049000	GPS Surge Protector Kit
AS0062000	High Interference GPS Antenna and Mounting Adapter Kit
CA0021302	2 m (6 ft) RG-6 Antenna Cable
CA0021306	6 m (20 ft) RG-6 Antenna Cable
CA0021330	30 m (100 ft) RG-6 Antenna Cable
CA0021345	45 m (150 ft) RG-6 Antenna Cable
CA0021360	60 m (200 ft) RG-6 Antenna Cable
CA0021375	75 m (250 ft) RG-6 Antenna Cable
CN0027700	F-type, RG-6 Antenna Cable Crimp-on Connector
TF0006000	F-type, RG-11 Antenna Cable Crimp Tool
TF0006400	RG-6 Crimp Tool
TF0013200	Antenna Cable Stripping Tool, RG-6
TF0013300	Antenna Cable Stripping Tool, RG-11
WC0004900	300 m (1000 ft) Roll RG-11 Cable

¹ Only applies if Power Option 07 is ordered
² Used for cable length greater than 75m (250ft)

GPS Substation Clock Requirements
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IRIG-B Time Code Accuracy, IED and System Design Issues
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NERC PRC-08 Compliance Statement
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Time in the Power Industry: How and Why We Use It
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Why GPS Clocks Are Not Free
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Chassis Dimensions
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Clock Option Selection Guide
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Clock Selection Guide
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Catalogo de Productos de Sincronizacion y Frecuencia
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