DNA/DNR-IRIG-650 IRIG Timing Layer
Chapter 1
3
Introduction
Tel: 508-921-4600
www.ueidaq.com
Vers:
4.6
Date: March 2019
DNx-IRIG-650 Chap1x.fm
© Copyright 2019
United Electronic Industries, Inc.
1.2
Layer
Features
The DNx-IRIG-650 layer has the following features:
•
IRIG-A, B, E and G output allows IRIG-650 to provide timing signals
•
IRIG-A, B, E and G input allows IRIG-650 to synchronize with external
IRIG-A, B, E and G sources
•
Modulated or DC level inputs and outputs
•
1 PPS output
•
Event input captures timing to UTC (Coordinated Universal Time)
•
Direct GPS input (active antenna)
•
10 MHz, 1 ppm time base or slaved to external 10 MHz
Protocols Supported:
IRIG-A:
A00x, ABx
IRIG-B:
B00x, B12x,B IEEE 1344, B TrueTime
IRIG-E:
E00x, E11x, E12x
IRIG-G:
G00x, G14x
Time Source:
The IRIG-650’s time keeper can be synchronized with the following sources:
•
IRIG AM-modulated input timecode
•
IRIG DCLS (i.e. NRZ-L code) or Manchester II code
•
GPS signal (sync’d with GPS 1 PPS clock, time derived from GPRMC string)
•
Precise external 1PPS (local time should be set by the user)
Inputs:
•
AM (timecode), AMIn, DCLS, MII (Manchester II)
•
GPS RFIn
•
1 PPS (TTL0, TTL1 Line)
•
External 10 MHz (TTL0)
•
External events (TTL-1u or SYNCx lines)
Outputs:
•
Time Code: AM (AMOut), DCLS (TTL-OutX), Manchester II
•
10 PPS, 100 PPS (TTL-OutX, SYNCx)
•
1MHz, 5 MHz, 10 MHz (TTL-OutX, SYNCx)
•
Custom PLL frequency (1Hz -1 MHz, 4 digits accurate)
•
1 PPS, 1 PPM, 1PPM (TTL-OutX, SYNCx)
