Introduction
1.6.3 AM and TTL Outputs
IEEE 1588 Clock Type
Without PTP Card
With PTP Card
Master Clock
ü
ü
Boundary Clock
ü
ü
Transparent Clock
ü
ü
Transparent/Slave Clock
ü
ü
Supported IEEE 1588 Profiles
Profile
IEC/IEEE Standard
Without PTP Card
With PTP Card
Power Profile
C37.238-2011
ü
ü
Utility Profile Level 1
IEC/IEEE 61850-9-3
Edition 1
ü
ü
Default P2P Profile
IEEE 1588-2008
ü
ü
Default E2E Profile
IEEE 1588-2008
ü
ü
Telecom Profile
(Slave Clock)
ITU-T G.8265.1 Annex A
ü
ü
Custom Profile
{User Defined}
ü
ü
1.6.3
AM and TTL Outputs
The PTP card provides AM (Amplitude Modulated) and TTL (Transistor-Transistor
Logic) outputs.
The AM OUT port supports the IRIG-B AM signal format, while the TTL OUT port
supports the IRIG-B PWM and PPS signal formats. Enabling/disabling the output ports
and – in the case of TTL OUT – selecting the signal format is controlled through the
RUGGEDCOM RSG2288 operating system.
NOTICE
The input impedance of third-party AM inputs must be 100 Ω minimum.
The number of devices that can be connected to the AM OUT and TTL Out ports is
dependent on the cabling type and length, as well as the input impedances of the
devices. The following simplified circuit schematic shows the interface between an
IRIG-B source and connected devices.
RUGGEDCOM RSG2288
Installation Manual, 04/2021, C79000-G8976-1045-17
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