Synchronization; Gnss Information; Gnss Antenna & Cable Characteristics; Synchronization Output - Irig-B - Arbiter Systems Power Sentinel 1133A Operation Manual

12.17 Synchronization

12.17 Synchronization
The standard 1133A includes an twelve-channel global positioning system (GNSS) receiver, which
provides accurate time to a fraction of a microsecond anywhere in the world. Optionally, choose
an IRIG-B decoder to synchronize the 1133A. By comparing an internal 10 MHz oscillator to the
1-PPS (pulse-per-second) output of the GNSS receiver, the 1133A maintains its frequency to within
10
a few parts in 10 . For IRIG-B synchronization (Option 07), timing signals are as accurate as the
IRIG-B clock source.
12.17.1

GNSS Information

Tracking
Acquisition
Accuracy
Out-of-Lock
Indication
12.17.2 GNSS Antenna & Cable Characteristics
Power
Frequency
Gain
VSWR
Mounting
Dimensions
Weight
Connections
Cable
12.17.3

Synchronization Output - IRIG-B

The 1133A includes one IRIG-B output for use with synchronizing external equipment.
Type
GPS-L1 (1575.42 MHz)
satellites depending on conditions, antenna location and
receiver model
2 minutes, typical
UTC USNO 1 µs
Via system interface and status display; optional, via
contact closure
Satellite Tracking, view from front panel, STATUS key
+5 Volts DC, 30 mA nominal., supplied through antenna
cable from 1133A
1575.42 MHz
35 dB (nominal)
2:1
3/4-inch NPT pipe thread (1"
77.5 mm diameter x 66.20 mm height (3.05" x 2.61")
170 grams (6.0 oz.)
Type-F
Type RG-6, 15 m (50 ft) included; longer cables option-
ally available
One; two-pole; IRIG-B000 or IRIG-B003 per C37.118
(unmodulated or DC level-shift), 200 mA peak; pluggable
5-mm terminal strip with mating connector
12 Channel, tracks up to 12
14 marine type) mount
133