Input Signal Specifications - Symmetricom TimeProvider 5000 User Manual

Appendix B Specifications and Factory Defaults
Specifications
Input Signals
Table B-6. Input Signal Specifications
Parameter
Requirement
Antenna Power
Interface
Requirement
Antenna Power
Interface
Type
Format
Impedance
Connector
Timing Relationship
between 1PPS and
TOD
Rise Time -1PPS Pulse
Pulse Width
384 TimeProvider 5000 User's Guide
Specification
GPS
Total gain should be between 25 dB and 35 dB,
including gain of antenna and loss of cable
5V, typical
SMA connector
GNSS
Total gain should be between 25 dB and 35 dB,
including gain of antenna and loss of cable
5V, typical
SMA connector
E1
G.703 Section 9 Framed E1
or G.703 Section 13 2048 kHz
CAS or CCS, CRC4 enable/disable
75 ohms
Mini-BNC coax
1PPS+TOD
Transmission of a TOD message starts 1 ms after the
rising edge of 1PPS signal, and the tramission is
completed within 500 ms, as shown in
This TOD message indicates the time of the current 1
PPS rising edge, and is sent at a rate of once per
second.
50 ns
50 ms < Pulse width < 200 ms
Figure B-1
.
098-00028-003 Revision A – June, 2011