Vicon NOVA V1400X-HSB-M User manual

XX018
V1400X-HSB-M
Hot Standby Switchover
Instruction Manual
VICON INDUSTRIES INC. 89 ARKAY DRIVE, HAUPPAUGE, NY 11788

NOVA V1400X-HSB-M Hot Standby Switchover
Instruction Manual
V1400X-HSB-M Hot Standby Switchover
Warning: To reduce a risk of fire or electric shock, do not expose this product to rain or
moisture.
Vicon Industries Inc. does not warrant that the functions contained in this equipment will meet your requirements or that the
operation will be entirely error free or perform precisely as described in the documentation. This system has not been
designed to be used in life-critical situations and must not be used for this purpose.
Copyright © 2000 Vicon Industries Inc. All rights reserved.
Product specifications subject to change without notice.
Vicon and its logo are registered trademarks of Vicon Industries Inc.
Vicon Part No. 8009-8018-00-00 Section 11 Rev 200

FCC Notice
Note: Complies with Federal Communications Commission Rules & Regulations Part 15, Subpart B for a
Class A digital device.
WARNING
This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in
strict accordance with the manufacturer’s instruction, may cause interference to radio and television reception.
It has been type tested and found to comply with the limits for a Class A computing device in accordance with
the specification in subpart B of part 15 of the FCC rules, which are designed to provide reasonable protection
against such interference in a commercial installation. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause interference to radio and television reception,
which can be determined by turning equipment off and on, the user is encouraged to try and correct the
interference by one or more of the following measures:
• Reorient the receiving antenna.
• Relocate the equipment with respect to the receiver.
• Relocated the equipment away from the receiver.
• Plug the equipment into a different electrical outlet so that the equipment and receiver
are on different branch circuits.
If necessary, the user should consult the dealer or an experienced radio/television technician for additional
suggestions.
The user may find the following booklet prepared by the Federal Communications Commission helpful:
“Interference Handbook, Bulletin CIB-2”
This booklet is available from the U.S. Government Printing Office, Superintendent of Documents, Mailstop
SSOP, Washington, D.C. 20402-9328, ISBN 0-16-045542-1.
Warning: Power must be removed from this unit before removing circuit modules or cables.
Caution: This unit contains circuit cards with integrated circuit devices that can be damaged by static
discharge. Take all necessary precautions to prevent static discharge.

XX018 Rev 200 NOVA V1400X-HSB-M Contents •i
Contents
Introduction......................................................................................................................... 1
Installation .......................................................................................................................... 2
System Interconnections .............................................................................................................................. 2
Control Interface Connections...................................................................................................................... 2
Titler Connections ........................................................................................................................................ 6
Alarm Connections....................................................................................................................................... 8
Video Switcher Connections ...................................................................................................................... 10
Supervisor Connections ............................................................................................................................. 11
Control Connections between Switchover Modules................................................................................... 15
Operation .......................................................................................................................... 16
Start-Up Screen............................................................................................................................................ 16
Hot Standby System Controls and Indicators........................................................................................... 16
Programming.................................................................................................................... 18
Maintenance...................................................................................................................... 18
Powerdown Procedure................................................................................................................................ 18
Fuse Replacement ....................................................................................................................................... 18
Shipping Instructions....................................................................................................... 19
Index.................................................................................................................................. 20

ii •Important Safeguards XX018 Rev 200 NOVA V1400X-HSB-M
Important
Safeguards
GRAPHIC SYMBOL EXPLANATION
The lightning flash with arrowhead symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated “dangerous voltage” within the
product’s enclosure that may be of sufficient magnitude
to constitute a risk of electric shock.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
TO REDUCE THE RISK OF ELECTRICAL SHOCK,
DO NOT REMOVE COVER (OR BACK). NO USER-
SERVICEABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL.
CAUTION:
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in
the literature accompanying the unit.
1. Read Instructions - All the safety and operating
instructions should be read before the video product is
operated.
2. Retain Instructions - All the safety and operating
instructions should be retained for future reference.
3. Heed Warnings - All warnings on the video product
and in the operating instructions should be adhered to.
4. Follow Instructions - All operating and use
instructions should be followed.
5. Cleaning - Step aapplies to equipment that can be
disconnected from the CCTV system without seriously
jeopardizing security. Step b applies to equipment that
must operate continuously such as video switching
equipment at military installations.
a. Disconnect this video product from its power
source before cleaning. Do not use caustic,
abrasive, or aerosol cleaners. Use a damp cloth for
cleaning.
b. Use a damp cloth to clean the equipment. Do not
allow moisture or liquids to enter any vents. Do not
use caustic, abrasive, or aerosol cleaners.
6. Attachments - Do not use attachments not
recommended by Vicon as they may cause hazards.
7. Water and Moisture - Do not use this video product
in any location where it may be exposed to water or
moisture. This does not apply to outdoor camera
housings, outdoor pan-and-tilt drives, and other
equipment designed for direct exposure to outdoor
environments.
8. Accessories - Do not place this video product on
any unstable surface or table. The video product may
fall, causing serious injury to a person and serious
damage to the video product. Use only with a mounting
accessory recommended by Vicon, or sold with the video
product. Any mounting of the video product should
follow Vicon’s instructions, and a mounting accessory
recommended by Vicon should be used.
9. Ventilation - Slots and openings in the cabinet are
provided for ventilation and to ensure reliable operation
of the video product and to protect it from overheating,
and these openings must not be blocked or covered.
The openings should never be blocked by placing the
video product on a rug or other similar surface. This
video product should never be placed near or over a
radiator or heat register. This video product should not
be placed in a built-in installation such as a bookcase or
rack unless proper ventilation is provided or Vicon’s
instructions have been adhered to.
10. Power Sources - This video product should be
operated only from the type of power source indicated
on the marking label. If you are not sure of the type of
power supplied to your installation site, consult your
Vicon dealer or local power company. For video
products intended to operate from battery power, or
other sources, refer to the operating instructions.
11. Grounding - This applies to video products
equipped with a 3-wire grounding-type plug, a plug
having a third (grounding) pin. This plug only fits into a
grounding-type power outlet. This is a safety feature. If
you are unable to insert the plug into the outlet, contact
your electrician to replace your obsolete outlet. Do not
defeat the safety purpose of the grounding-type plug.
12. Power-Cord Protection - Power supply cords
should be routed so that they are not likely to be walked
on or pinched by items placed upon or against them,

XX018 Rev 200 NOVA V1400X-HSB-M Important Safeguards •iii
paying particular attention to cords at plugs,
convenience receptacles, and the point where they exit
from the video product.
13. Outdoor Cable Grounding - If an outside cable
system is connected to the video product, be sure the
cable system is grounded so as to provide some
protection against voltage surges and built-up static
charges. Section 810 of the National Electrical Code,
ANSI/NFPA 70-1984, provides information with respect
to proper grounding of the lead-in wire to an antenna
discharge unit, size of grounding conductors, location of
antenna-discharge unit, connection to grounding
electrodes, and requirements for the grounding
electrode.
14. Lightning - For added protection for this video
product when it is not used for long periods of time,
disconnect it from its power source and from the cable
system. This prevents damage to the video product due
to lightning and power-line surges.
15. Power Lines - An outside cable system should not
be located in the vicinity of overhead power lines or
other electric light or power circuits, or where it can fall
into such power lines or circuits. When installing an
outside cable system, extreme care should be taken to
keep from touching such power lines or circuits as
contact with them might be fatal.
16. Overloading - Do not overload wall outlets and
extension cords as this can result in a risk of fire or
electric shock.
17. Object and Liquid Entry - Never push objects of
any kind into this video product through openings as
they may touch dangerous voltage points or short out
parts that could result in a fire or electric shock. Never
spill liquid of any kind on the video product.
18. Servicing - Do not attempt to service this video
product yourself as opening or removing covers may
expose you to dangerous voltage or other hazards.
Refer all servicing to qualified service personnel.
19. Damage Requiring Service - Disconnect this video
product from its power source and refer servicing to
qualified service personnel under the following
conditions. Note that step cdoes not apply to outdoor
camera housings, outdoor pan-and-tilt drives and other
equipment specifically designed for direct exposure to
outdoor environments.
a. When the power-supply cord or plug is damaged.
b. If liquid has been spilled, or objects have fallen into
the video product.
c. If the video product has been exposed to rain or
water.
d. If the video product does not operate normally by
following the operating instructions. Adjust only
those controls that are covered by the operating
instructions, as an improper adjustment of other
controls may result in damage and will often require
extensive work by a qualified technician to restore
the video product to its normal operation.
e. If the video product has been dropped or the cabinet
has been damaged.
f. When the video product exhibits a distinct change in
performance - this indicates a need for service.
20. Replacement Parts - When replacement parts are
required, be sure the service technician has used
replacement parts specified by Vicon or that have the
same characteristics as the original part. Unauthorized
substitutions may result in fire, electric shock, or other
hazards.
21. Safety Check - Upon completion of any service or
repairs to this video product, ask the service
technician to perform safety checks to determine
that the video product is in proper operating
condition.

XX018 Rev 200 NOVA V1400X-HSB-M Introduction •1
Introduction
The V1400 Hot Standby Switchover is an interface between a Primary and Secondary system for the control and operation of CCTV equipment.
The switchover system includes two CPUs (Primary and Secondary) and switchover modules. Should the Primary system malfunction, the
switchover modules will route control to the Secondary system without loss of data.
The Secondary system is always powered and can assume control of the CCTV equipment within milliseconds of a problem with the Primary
system. Two high-performance, 16-bit parallel communication channels keep the Secondary system current on the status of all functions in the
Primary system. For example, any programming change or operator action, such as calling up a camera to a monitor, is immediately
communicated to the Secondary system. In the event of a malfunction in the Primary system, control is routed to the Secondary system until the
Primary system is verified to be operational again. The Secondary system will then release control to the Primary system.
1
2
3
4
5
6
1
2
3
4
5
6
Connections between
primary and secondary
V1400X-CI-M cards.
Connections between
switchover modules
and peripherals.
All peripheral equipment,
such as switcher card
cages, keypads, receivers,
alarm interfaces, etc.
Connections between
primary CPU and
switchover modules.
Connections between
secondary CPU and
switchover modules.
Hot Standby
Switchover
Modules
Primary V1400 CPU Secondary V1400 CPU
System Component Maximum Number
Receivers 2048
Monitors 128
Keypads 64
Alarms Receiver 2048
XIA 512
Figure 1
Hot Standby System Overview

2 •Installation XX018 Rev 200 NOVA V1400X-HSB-M
Installation
System Interconnections
Prefabricated cables or mating connectors (for cables that you must fabricate) are provided. The cables must be shielded using the connector
shells.
Warning: Make sure that all units that are being connected are powered down before making the connections.
Control Interface Connections
Each CPU has one V1400X-CI-M card, and each of the CI cards must be connected to the other CI card and also to the V1400X-SSO supervisor
switchover module. Table 1 shows the connections for the Primary and Secondary V1400X-CI-M cards.
If you have more than 1024 receivers in your system, you must use the V1400X-SSO-E supervisor module as well as the V1400X-SSO module.
Both V1400X-SSO and V1400X-SSO-E modules connect to the V1400X-CI-M boards. The V1400X-SSO module must also be connected to the
V1400X-SV-M System Supervisor (discussed on page 12). Table 1
Connections to Primary and Secondary V1400X-CI-M Cards
Secondary CI
Connector No. Connects to: Primary CI Connector No. Connects to:
J3 J4 on the Primary V1400X-CI-M J3 J4 on the Secondary V1400X-CI-M
J4 J3 on the Primary V1400X-CI-M J4 J3 on the Secondary V1400X-CI-M
J5 J2 on the V1400X-SSO module J5 J1 on the V1400X-SSO module
J6 not connected J6 not connected
J7 J11 on the V1400X-SSO-E module* J7 J10 on the V1400X-SSO-E module*
J8 J14 on the V1400X-SSO-E module* J8 J13 on the V1400X-SSO-E module*
* Systems with more than 1024 receivers only.

XX018 Rev 200 NOVA V1400X-HSB-M Installation •3
Prepared cables may or may not be supplied in the accessory pack, depending on the particular system configuration. If they are not in the
accessory pack, the pack will contain the necessary mating connectors to allow the installer to make his own cables. If the cables must be
assembled by the installer, connect pin 1 on the Primary system’s end of the cable to pin 1 on Secondary system’s end of the cable, pin 2 to pin 2,
and so forth.
Note: If you assemble the cables for these connections, note that the cables must be shielded using the connector shells.
Figure 2 illustrates connections between the two CI cards. Figure 3 shows connections between the CI cards and the V1400X-SSO Supervisor
module. If you have more than 1024 receivers, use Figure 4 to make connections between the V1400X-SSO-E and the CI cards. You may also
refer to Table 1.
CARD SLOT 3
1
2
3
4
5
6
J2 J3 J4 J5
CARD SLOT 3
1
2
3
4
5
6
J2 J3 J4 J5
J3 J4
V1400X-CI-M
J5 J6 J7 J8
SECONDARY CPU
J3 J4
V1400X-CI-M
J5 J6 J7 J8
PRIMARY CPU
Figure 2
Connections between Primary and Secondary V1400X-CI-M Boards

4 •Installation XX018 Rev 200 NOVA V1400X-HSB-M
J3 J4
V1400X-CI-M
CARD SLOT 3
J5 J6 J7 J8 J3 J4
V1400X-CI-M
J5 J6 J7 J8
1
2
3
4
5
6
J2 J3 J4 J5
(SYSTEM
SUPERVISOR CPU)
V1400X-SSO
STANDBY PRIMARY
J2 J17 J1 J16
J6 J9 J12
J15
J8 J11 J14 J7 J10 J13
SECONDARY CPU PRIMARY CPU
Figure 3
Connections between V1400X-CI-M Boards and V1400X-SSO Supervisor Module

XX018 Rev 200 NOVA V1400X-HSB-M Installation •5
J3 J4
V1400X-CI-M
CARD SLOT 3
J5 J6 J7 J8 J3 J4
V1400X-CI-M
J5 J6 J7 J8
1
2
3
4
5
6
J2 J3 J4 J5
(SECONDARY SYSTEM
SUPERVISOR CPU)
V1400X-SSO-E
STANDBY
RECEIVERS / DOMES (1025 ~ 1536)
RECEIVERS / DOMES (1537 ~ 2048)
PRIMARY
J6 J9 J12 J8 J11 J14 J7 J10 J13
SECONDARY CPU PRIMARY CPU
Figure 4
Connections between V1400X-SSO-E Supervisor Module
(systems with more than 1024 cameras only)

6 •Installation XX018 Rev 200 NOVA V1400X-HSB-M
Titler Connections
Connect the cables between the Primary and Secondary V1400X-
TC-M CPUs and the V1400X-TSO module as shown in Table 2.
Instead of using Table 2, Figure 5 may also be used.
Prepared cables may or may not be supplied in the accessory pack,
depending on the particular system configuration. If they are not in
the accessory pack, the pack will contain the necessary mating
connectors to allow the installer to make his own cables. If the cables
must be assembled by the installer, connect pin 1 on the Primary
system’s end of the cable to pin 1 on Secondary system’s end of the
cable, pin 2 to pin 2, and so forth.
Note: If you assemble the cables for these connections, note that the
cables must be shielded using the connector shells.
Table 2
Connections to V1400X-TSO Titler Module
V1400X-TSO Connector No. Connects to:
J1 TDT cages for outputs 1-64
J2 J2 on Primary V1400X-TC-M
J3 J2 on Secondary V1400X-TC-M
J4 TDT cages for outputs 65-128
J5 J3 on Primary V1400X-TC-M
J6 J3 on Secondary V1400X-TC-M
J7 - J12 unused

XX018 Rev 200 NOVA V1400X-HSB-M Installation •7
PRIMARY CPU
V1400X-TC-M
J2 J3 J4 J5
SECONDARY CPU
V1400X-TC-M
J2 J3 J4 J5
(TIME/DATE/TITLER CPU)
V1400X-TSO
OUTPUT OUTPUT
STANDBY STANDBY
TO T/D/T CAGES FOR
OUTPUTS 01 ~ 64
STANDBYPRIMARY
1
2
3
4
5
6
CARD SLOT 6
TO T/D/T CAGES FOR
OUTPUTS 65 ~ 128
J7
J1
J8
J2
J9
J3
J10
J4
J11
J5
J12
J6
Figure 5
Connections between the V1400X-TSO and V1400X-TC-M Boards
Primary

8 •Installation XX018 Rev 200 NOVA V1400X-HSB-M
Alarm Connections
The V1400X-AC-M alarm CPU cards in the Primary and Secondary CPUs provide connection to external alarm interfaces (V1200X-IA, V1300X-IA,
or V1300X-IA-EX, referred to hereafter as XIAs) and the V1400X-VLD Video Loss Detector, to a dedicated alarm computer, and to a dedicated
alarm printer. Some of these devices may not be used in a specific system. In a hot standby system, the connections between the alarm CPU
cards and the XIAs, computer, and printer are made via the V1400X-ASO switchover module.
Table 3 shows connections between the V1400X-ASO alarm switchover module and the Primary and Secondary alarm CPU cards (refer to the
following sections for RS-232 connections). Figure 6 illustrates these connections. Table 4 lists the pin connections for the two RS-232 alarm
interface ports, either of which may be used for a host computer or printer.
Prepared cables may or may not be supplied in the accessory pack, depending on the particular system configuration. If they are not in the
accessory pack, the pack will contain the necessary mating connectors to allow the installer to make his own cables. If the cables must be
assembled by the installer, connect pin 1 on the Primary system’s end of the cable to pin 1 on Secondary system’s end of the cable, pin 2 to pin 2,
and so forth.
Note: If you assemble the cables for these connections, note that the cables must be shielded using the connector shells. For RS-232 connections,
pin 1 is located on the upper right as you view the unit from the rear.
Table 3
Connections to V1400X-ASO Alarm Module
V1400X-ASO Connector
No. Connects to:
J1 alarms 257-512
J2 J9 on Primary V1400X-AC-M
J3 J9 on Secondary V1400X-AC-M
J4 alarms 1-256
J5 J10 on Primary V1400X-AC-M
J6 J10 on Secondary V1400X-AC-M
J7 RS-232 alarm port
J8 J11 on Primary V1400X-AC-M
J9 J11 on Secondary V1400X-AC-M
J10 RS-232 alarm port
J11 J12 on Primary V1400X-AC-M
J12 J12 on Secondary V1400X-AC-M
Table 4
RS-232 Connections
V1400X-ASO
Pin Number Printer or Computer Pin Number Pin Function
1 1 not connected
2 2 TxD
3 3 RxD
4 not connected
4 8 RTS
5 7 CTS
6 6 not connected
7 5 ground
8 not connected
9 9 not connected

XX018 Rev 200 NOVA V1400X-HSB-M Installation •9
PRIMARY CPU
(ALARM CPU)
V1400X-ASO
J10J9
V1400X-AC-M
OUTPUT OUTPUT
PRIMARY STANDBY STANDBYPRIMARY
J2 J3 J4 J5 J6
J11
J7 J8 J9 J10 J11 J12
J12
SECONDARY CPU
J10J9
V1400X-AC-M
J11 J12
1
2
3
4
5
6
CARD SLOT 5
ALARMS 001 ~ 256
RS-232 ALARM
INTERFACE PORT
ALARMS 257 ~ 512
RS-232 ALARM
INTERFACE PORT
J1
Figure 6
Connections between V1400X-ASO Module and V1400X-AC-M Cards

10 •Installation XX018 Rev 200 NOVA V1400X-HSB-M
Video Switcher Connections
Video switching is controlled by the V1400X-VC-M video switcher CPU card in the V1400 CPU card cage. Refer to Matrix 66 Super-High-Density
Video Switching System Instruction Manual X824
for Matrix 66 card cages or Model V4481SCC-HD Matrix 44 High-Density Video Switching
System Instruction Manual X783
for Matrix 44 card cages. You may use Matrix 44 card cages for systems with less than 256 cameras. Figure 7
illustrates connections between the Primary and Secondary V1400X-VC-M CPUs and the V1400X-VSO module. It also shows the connectors to
use for video switch cages and video loss detectors. You may also use Table 5.
Prepared cables may or may not be supplied in the accessory pack, depending on the particular configuration. If they are not in the accessory
pack, the pack will contain the necessary mating connectors to allow the installer to make his own cables. If the cables must be assembled by the
installer, connect pin 1 on the Primary system’s end of the cable to pin 1 on Secondary system’s end of the cable, pin 2 to pin 2, and so forth.
Note: If you assemble the cables for these connections, note that the cables must be shielded using the connector shells.
Table 5
V1400X-VSO Connections
V1400X-VSO Connector No. Connects to:
J1 video loss detectors and video switcher cages for outputs 1-64
J2 J2 on Primary V1400X-VC-M
J3 J2 on Secondary V1400X-VC-M
J4 video loss detectors and video switcher cages for outputs 65-128
J5 J3 on Primary V1400X-VC-M
J6 J3 on Secondary V1400X-VC-M
J7 - J12 not used

XX018 Rev 200 NOVA V1400X-HSB-M Installation •11
(VIDEO SWITCHER CPU)
V1400X-VSO
OUTPUT OUTPUT
PRIMARY STANDBY STANDBYPRIMARY
PRIMARY CPU
V1400X-VC-M
J2 J3 J4 J5
SECONDARY CPU
V1400X-VC-M
J2 J3 J4 J5
1
2
3
4
5
6
CARD SLOT 4
VIDEO LOSS DETECTORS
AND VIDEO SWITCH CAGES FOR
OUTPUTS 01 ~ 64
VIDEO LOSS DETECTORS
AND VIDEO SWITCH CAGES
FOR OUTPUTS 65 ~ 128
J7
J1
J8
J2
J9
J3
J10
J4
J11
J5
J12
J6
Figure 7
Connections between V1400X-VSO and V1400X-VC-M Cards
Note: If you use video loss detectors in your system, be sure to connect the video loss detector (VLD) before any V1300X-IA alarm interface
device in the chain. The video switcher input to the VLD can be anywhere in the chain but must be on the video bus that controls the VLD’s
assigned monitor. You must also configure the high speed switcher in the programming menus correctly and set the alarm assigned to the
VLD to NC.

12 •Installation XX018 Rev 200 NOVA V1400X-HSB-M
Supervisor Connections
The V1400X-SV-M supervisor card in the Primary and Secondary CPUs receives and transmits commands and information from operator
keypads, receivers, and a host computer.
It also provides composite video output to a monitor for the display of the programming menus. Table 6
list the V1400X-SV-M connections.
You may also refer to Figure 8.
Prepared cables may or may not be supplied in the accessory pack, depending on the particular system configuration. If they are not in the
accessory pack, the pack will contain the necessary mating connectors to allow the installer to make his own cables. If the cables must be
assembled by the installer, connect pin 1 on the Primary system’s end of the cable to pin 1 on Secondary system’s end of the cable, pin 2 to pin 2,
and so forth.
Note: If you assemble the cables for these connections, note that the cables must be shielded using the connector shells.
Table 6
Connections to the Primary and Secondary V1400X-SV-M Boards
Secondary
V1400X-SV-M Connector Connects to: Primary V1400X-SV-M Connector Connects to:
BNC “Standby” BNC on V1400X-SSO BNC “Primary” BNC on V1400X-SSO
J2 J8 on V1400X-SSO module J2 J7 on V1400X-SSO module
J4 J11 on V1400X-SSO module J4 J10 on V1400X-SSO module
J5 J14 on V1400X-SSO module J5 J13 on V1400X-SSO module
J7 J17 on V1400X-SSO module J7 J16 on V1400X-SSO module

XX018 Rev 200 NOVA V1400X-HSB-M Installation •13
J2V1400X-SV-M
(SYSTEM
SUPERVISOR CPU)
SECONDARY CPU
V1400X-SSO
J4 J5 J7 J2V1400X-SV-M
PRIMARY CPU
J4 J5 J7
STANDBY
RS-232 HOST COMPUTER PORT
RECEIVERS / DOMES (0513 ~ 1024)
STATUS DISPLAY MONITOR
RECEIVERS / DOMES (0001 ~ 0512)
KEYPADS
PRIMARY
J2 J17 J1 J16
J6 J9 J12 J8 J11 J14 J7 J10 J13
1
2
3
4
5
6
CARD SLOT 2
Figure 8
Connections between the V1400X-SSO Modules and V1400X-SV-M Cards
J15
V1400X-SSO