Symmetricom TimeProvider 5000 User Manual page 435

Table B-7. TimeProvider 5000 Main Shelf Input Signal Specifications (Continued)
Parameter
Antenna Power
Interface
Type
Format
Impedance
Connector
Timing Relationship
between 1PPS and
TOD
Rise Time -1PPS Pulse
Pulse Width
TOD Frame
TOD Transmission
Parameters
TOD Message
Encoding
098-00028-000 Revision F – May, 2012
Specification
5V, typical
SMA connector, female
E1
G.703 Section 9 Framed E1
or G.703 Section 13 2048 kHz
CAS or CCS, CRC4 enable/disable
75 ohms
Mini-BNC coaxial, male
SMB male for 090-50315-01
1PPS+TOD
Transmission of a TOD message starts 1 ms after the
rising edge of 1PPS signal, and the transmission 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
TOD messages use whole 8-bit bytes for
transmission, with check sum protection. Message
type and message ID are used to clarify messages.
Follows Big Endian convention when a field is longer
than one byte, where bit 0 represents the least
significant bit (LSB), and bit 0 of each byte is
Figure B-2
transmitted first. See
Table B-8
See for TOD frame field descriptions.
Baud Rate: 9600
Parity Check: None
Start Bit: 1 (low level)
Stop Bit: 1 (high level)
Idle Frame: High level
Data Bits: 8
Binary
Appendix B Specifications and Factory Defaults
Figure B-1
.
TimeProvider 5000 User's Guide 433
Specifications
.