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ASX <strong>ALC</strong> <strong>Timing</strong> <strong>Services</strong><br />
Access to raw GPS time and ASX Matching Engine Time Synch<br />
ASX provides connection to two separate time synchronisation services: GPS Time<br />
and ASX Matching Engine Time Synch. The GPS time feed allows <strong>ALC</strong> customers<br />
to synchronise <strong>the</strong>ir computer system clocks to <strong>the</strong> globally available GPS reference<br />
time, while <strong>the</strong> ASX matching engine time feed provides access to <strong>the</strong> same time<br />
signal used to set <strong>the</strong> clocks on <strong>the</strong> ASX Trade and ASX Trade24 matching engines.<br />
GPS Time Feed<br />
• Two antennae available for optional redundancy.<br />
• Certified antenna-to-cabinet propagation delay.<br />
• Raw signal feed with minimal equipment between<br />
antenna and cabinet.<br />
• Separate feed available in Bondi Junction ASX<br />
[Proximity] data centre.<br />
Pricing<br />
ASX Matching Engine Time Synch<br />
• Precision Time Protocol (PTP) feed.<br />
• Symmetricom S350 time server stabilised with a<br />
Rubidium frequency standard.<br />
• Maintained by Australia’s National Measurement<br />
Institute (NMI).<br />
• ASX matching engine time is within 150<br />
microseconds of UTC (Aus).<br />
Both GPS Time and ASX Matching Engine Time Synch services are provided in <strong>the</strong> <strong>ALC</strong> Service Connection C<br />
category: $1,000 (plus GST) per month per service. Service installation is $1,500 (plus GST) per installation.<br />
Connectivity<br />
ASX TECHNICAL SERVICES
Technical Information<br />
GPS Time Feed<br />
Distance between redundant antennae is approximately<br />
4 metres.<br />
GPS signal is L1 1575.42 MHz. Meinberg receivers<br />
require an adaptor.<br />
Total propagation delay is <strong>the</strong> sum of:<br />
1) Delay as measured at <strong>the</strong> <strong>ALC</strong> GPS distribution<br />
switch: 447ns.<br />
2) Delay due to cabling (installed to required length)<br />
from <strong>the</strong> customer distribution point to customer<br />
cabinet: 4ns per metre of cable.<br />
3) Delay through a signal booster (if required): 9ns<br />
FIXED CONFIGURATION<br />
PTP protocol<br />
Physical interface<br />
Port Capacity<br />
CUSTOMER VARIABLE CONFIGURATION (PER PORT)<br />
Delay Mechanism<br />
Mode<br />
Announce Interval*<br />
Sync Interval*<br />
Minimum delay request internal*<br />
Minimum peer delay request interval*<br />
Time to live (TTL)<br />
Domain<br />
Transport protocol<br />
IP address (including netmask & default gateway)<br />
* Configurable in whole powers of 2.<br />
Example 1<br />
Customer installation with 42m of cable, no signal<br />
booster:<br />
Delay: 447ns + (42 x 4ns) = 615ns<br />
Example 2<br />
Customer installation with 80m of cable, with signal<br />
booster:<br />
Delay: 447ns + (80 x 4ns) + 9ns = 776ns<br />
ASX Matching Engine Time Synch<br />
The PTP timeservers are driven by a Rubidium-stabilised<br />
Symmetricom S350 timeserver.<br />
PTP timing is provided by a Master Clock PTP option<br />
card housed in a Spectracom SecureSync time server.<br />
Matching engine time is within 150µs of GPS time.<br />
PTPv2<br />
a.k.a. IEEE 1588-2008<br />
10/100 Mb E<strong>the</strong>rnet, RJ45 copper<br />
Sync rate above 512 syncs/sec<br />
End to end (default), peer to peer, or disabled<br />
Ordinary clock (master) 2 step (default) or 1 step operation<br />
2 seconds (default)<br />
1 second (default)<br />
16 seconds (default)<br />
1 second (default)<br />
1 (default)<br />
0 (default)<br />
Layer 3 (IPv4) (default) or Layer 2 (802.3/E<strong>the</strong>rnet)<br />
Static or DHCP (from customer DHCP server)<br />
ASX TECHNICAL SERVICES<br />
Fur<strong>the</strong>r Information<br />
Andrew Biggart<br />
Presales – Technical <strong>Services</strong><br />
+61 2 9227 0025<br />
andrew.biggart@asx.com.au<br />
ASX Information & Technical <strong>Services</strong><br />
Account Management<br />
InfoandTech<strong>Services</strong>@asx.com.au<br />
Trade Marks The trade marks listed below are trade marks of ASX. Where a mark is indicated as a registered mark<br />
it is registered in Australia and may also be registered in o<strong>the</strong>r countries. Nothing contained in this document should<br />
be construed as being any licence or right of use of any trade mark contained within <strong>the</strong> document. ASX Trade® ASX<br />
Trade24®<br />
Disclaimer: This is not intended to be financial product advice. To <strong>the</strong> extent permitted by law, ASX Limited ABN 98 008<br />
624 691 and its related bodies corporate exclude all liability for any loss or damage arising in any way including by way<br />
of negligence. This document is not a substitute for <strong>the</strong> Operating Rules of <strong>the</strong> relevant ASX entity and in <strong>the</strong> case of any<br />
inconsistency, <strong>the</strong> Operating Rules prevail.<br />
© Copyright 2013 ASX Limited ABN 98 008 624 691. All rights reserved 2013.<br />
Information line: 131 279 www.asx.com.au
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