The Arbiter Systems^®, Inc. Model 1095A/C Industrial GPS Clock is a GPS timing source for industrial applications that require common timing signals, such as IRIG-B, 1PPS, and RS-232 serial timecodes, in a small, rugged enclosure suitable for indoor and outdoor applications. The Model 1095A/C with 250 ns (typical < 100 ns) worst-case accuracy meets the most demanding requirements including synchrophasors. The Model 1095C has a see-through cover with 4 LEDs to monitor operating status and a large 7-segment LED time display. The Model 1095A has an opaque cover. The 1095A/C comes standard with a built-in GPS antenna or can be configured with an optional external antenna.

Four outputs, with terminal strip connectors, provide three high-drive 5 Vdc (250 mA at > 4 V) outputs: IRIG-B00x level-shift, programmable pulse A and programmable pulse B, and one 4.5 Vpp modulated IRIG-B (IRIG-B12x) signals. All of the outputs have substantial drive capability to easily drive multiple loads in parallel. Two serial (RS-232) ports can be used for setup, or for serial timecodes such as IRIG-J. An RS-485 port (transmit only) is also included.

Standard features include a GPS Data Backup Battery, one Form C fail-safe relay, and Event Capture capability. The GPS Data Backup Battery maintains the real-time clock, almanac and ephemeris data in the 12-channel GPS receiver to speed acquisition. Satellites are acquired in as little as 15 seconds after a brief power loss. One Form C (SPDT) fail-safe relay is selectable to Fault, Unlocked, or Programmable Pulse functions and is compatible with digital fault recorder inputs. The Event Capture records events triggered from the dedicated, optically-isolated input or from either serial port receive line with 100 ns resolution.

The Model 1095A/C accepts nominal 12/24 Vdc (9-30 Vdc) power from battery or other power sources.

Receiver Characteristics:

Timing Accuracy:

Specifications apply at the 1 PPS output, IRIG-B Level-Shift and Programmable Pulse outputs, with US Department of Defense Selective Availability (SA), as of date of publication.

UTC/USNO:  ±250 ns peak; <100 ns typical (SA off)

Position Accuracy:

10 meters, rms, 90% confidence

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:

Outputs:

Four Total: three high-drive 5 Vdc (250 mA at > 4 V), one analog (4.5 Vpp), terminal strip connectors.

• Output 1: Programmable Pulse A
• Output 2: IRIG-B00x level-shift
• Output 3: Programmable Pulse B
• Output 4: Modulated IRIG-B

Event Input:

One opto-isolated event capture input with 100 ns resolution, terminal strip inputs for 5 to 12, 24 to 48 and 120 to 240 Vdc nominal input.

Relay Contact:

One, Form C (SPDT) fail-safe, 0.3 A at 130 Vdc; jumper selectable to Fault, Out-of-lock, Programmable Pulse A (PPA), Programmable Pulse B (PPB), Stabilized, and Event-In functions. Fail-safe means the relay indicates "fault" or "unlocked" condition with power off.

Programmable Pulse Output:

Two programmable pulse outputs (5 Vdc), PPA and PPB.

Modes:

• 1 PPS
• 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.

Aux IRIG Mode provides an additional unmodulated IRIG-B signal on the PPB output.

Interface:

Operator:

1095C Display: 

• 6-digit LED Time of Day (20 mm)

Status LEDs: 

• Operate (green)
• Stabilized (green)
• Unlocked (red)
• Fault (red)

Setup (via remote interface): 

• Local time offset
• IRIG Setup: Local/UTC/IEEE 1344
• Daylight Saving Time: On/Off/Auto (Configurable)
• LED Brightness control
• 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
• Relay Control
• RS-485 Output
• Serial port2: RS-232
• Serial port2: RS-232 (DIP switches)

System:

RS-232:  1200 to 115,200 baud; 7 or 8 data bits; 1 or 2 stop bits; even/odd/no parity (TXD, RXD, COM)

Interrogate mode 

Broadcast modes: 

• Standard ASCII (IRIG-J)
• Extended ASCII
• ASCII with Time Quality
• ASCII with Time Quality and Year
• Vorne large-display time
• Status (output on change of status)
• Configurable Serial Time Code
• Event

RS-422/485  Transmit only, to drive multiple devices. Available Signals include: Serial Port 1, Serial Port 2, IRIG-B, PPA, PPB, and 1 PPS.

Certifications and Approvals:

CE mark/label and certificate

Power Requirements:

Standard:

Voltage:  9 to 30 Vdc, 3 W maximum; negative common; 3.81 mm pluggable terminal strip.

General:

Physical:

Size:  180 x 120 x 60 mm (7.1 x 4.7 x 2.4 in.) plus cable gland

Weight:  1 kg (2.2 lbs), net
2 kg (4.4 lbs), shipping

Mounting:  4 mounting feet included

Antenna:  Built-in or optional external

I/O Port:  Accepts up to a 16 conductor cable with an OD from 6 mm (0.236 in.) to 15 mm (0.590 in.)

Degree of Protection:  IP65 (IEC 60529), NEMA 1, 2, 4, 4x, 12, 13

Environmental:

Operating Temperature:  -40° to +85° C

Humidity:  Noncondensing

EMC:  Radiated susceptibility: passes walkie-talkie test.

Options:

General:

Accessories:

Available: