Spectracom SecureSync User Manual

Offset: Displays the configured Offset (to account for cable delays or other latencies).
Edge: Shows if the on-time point of the 1PPS output is the rising or falling edge of the
pulse.
Pulse Width: Displays the configured Pulse Width of the 1PPS output. The Pulse Width is
displayed in nanoseconds (ns). The default Pulse Width is 200 milliseconds.
5.2.3.2 1PPS In/Out [1204-28, -2A]
These 1PPS input/output cards provide one 1PPS input, and three or two additional 1PPS out-
puts on BNC or ST connectors for the SecureSync platform.
Model 1204-28 1PPS Input/Output: Specifications
Inputs/Outputs: (1) 1PPS input/(3) 1PPS output
Signal Type and Connector: TTL (BNC)
Input Impedance: 50 Ω
Output Load Impedance: 50 Ω
Rise Time to 90% of Level: <10ns
Programmable Pulse Width: 100ns to 900ms with 20ns resolution
Absolute Phase Error: ±50ns (1σ)
Programmable Phase Shift: ±5ns to 500ms with 5ns resolution
Maximum Number of Cards: 6
Ordering Information: 1204-28: 1PPS 1-input/3-output, BNC connectors
Figure 5-19: Model 1204-28 option card rear plate
Model 1204-2A 1PPS Input/Output: Specifications
Inputs/Outputs: (1) 1PPS input/(2) 1PPS output
Operating Wavelength: 820/850nm
372 SecureSync User Reference Guide
APPENDIX

Spectracom SecureSync Specifications

General

Model	SecureSync
Time Reference	GPS, GLONASS, BeiDou, Galileo, IRIG, NTP, PTP, 1PPS
Disciplines	GNSS, IRIG, PTP, NTP, SyncE
Inputs	GPS, GLONASS, BeiDou, Galileo, IRIG, NTP, PTP, 1PPS
Outputs	NTP, PTP, 1PPS, IRIG
Protocols	PTP, NTP, SNMP, SSH, HTTPS
Form Factor	1U Rack-mount
Redundancy	Optional redundant power supply
Security Features	Password protection, access control lists, SSH, HTTPS, SNMPv3, NTP authentication, PTP authentication
Power Supply	100-240 VAC, 50-60 Hz
Operating Temperature	0°C to +50°C
Dimensions	44.45 mm (H) x 482.6 mm (W)