N
N
T
T
S
S
-
-
2
2
0
0
1
1
.
.
M
M
A
A
N
N
1
1
-
-
3
3
R
R
e
e
v
v
.
.
A
A
Frequency:
47-440 Hz
Power Consumption:
<15W
1.8
NTS-100 SYNCHRONIZATION OPTIONS
1.8.1
The NTS-100 can be factory configured to synchronize to four different types of input
signals:
•
User supplied, on-time 1PPS with operator input of date and time at the next second
and any leap second information
•
User supplied IRIG-B, AM or TTL, with operator input of date and leap second
information
•
Automated Computer Time Service (ACTS) of the National Institute of Standards and
Technology (NIST) via dial-up modem, which requires no operator input of any time
information
•
Internal NAVSTAR GPS core module, which requires no operator input of any time
information
See Manual Section 5 for details of the synchronization source option configured for your
unit.
1.9
INTERNAL TIMING PERFORMANCE SPECIFICATIONS
1.9.1
The absolute time and frequency characteristics of the NTS-100 are essentially those of
the input synchronization source. The relative synchronization characteristics given here
reflect the capabilities of the NTS-100 to preserve the time and frequency characteristics
of the synchronization source being provided to the NTS-100. Refer to Manual Section 5
for details concerning the time and frequency characteristics of the synchronization
source option of interest.
1.9.2
The NTS-100 output signal timing and frequency specifications relative to the input
synchronization source are:
1PPS Output (Option)
Accuracy:
±1 µs
Amplitude Modulated IRIG B Output (Option)
Accuracy:
±10 µs
10 MHz Output (Option)
Accuracy:
±1 in 10
-11
@ tau = 1 day
1.9.3
During a synchronization input outage, following initial synchronization of the NTS-100 to
the input synchronization source, the timing and frequency outputs from the NTS-100 will
diverge from the input at the rate of approximately 2 parts in 10
6
, if the ambient
temperature is maintained within ±3°C.
1.10
NETWORK TIME PROTOCOLS
1.10.1
The NTS-100 will respond to time synchronization requests from hosts using these User
Datagram Protocol/Internet Protocols (UDP/IP):
NTP ver. 2.0
UDP Port 123 RFC1119
Содержание IRIG NTS-100
Страница 1: ...Network Time Server IRIG NTS 100 600 201 SERIAL NUMBER_______________ Revision A January 20 1997...
Страница 42: ...1 20 97 N NT TS S 2 20 01 1 M MA AN N 4 4 1 1 R Re ev v A A 4 SECTION IV NOT USED...
Страница 75: ...1 20 97 N NT TS S 2 20 01 1 M MA AN N C C 1 1 R Re ev v A A APPENDIX D DETAILED DRAWINGS BILL OF MATERIALS...
