This document may not be copied in whole or in part or otherwise reproduced without prior
written consent from UTC Fire & Security except where specifically permitted under US and
international copyright law.
Document number: 466-2341 REV C (October 31, 2012 11:56 AM).
Disclaimer
The information in this document is subject to change without notice. UTC Fire & Security
Company assumes no responsibility for inaccuracies or omissions and specifically disclaims
any liabilities, losses, or risks, personal or otherwise, incurred as a consequence, directly or
indirectly, of the use or application of any of the contents of this document. For the latest
documentation, contact your local supplier or visit us online at www.utcfireandsecurity.com.
This publication may contain examples of screen captures and reports used in daily
operations. Examples may include fictitious names of individuals and companies. Any
similarity to names and addresses of actual businesses or persons is entirely coincidental.
Trademarks and
patents
Other trade names used in this document may be trademarks or registered trademarks of the
manufacturers or vendors of the respective products.
This product and the use of this product may be covered by one or more of the following
patents:
5,805,063; 5,872,512; 5,942,981; 5,686,896; 5,686,885; or 4,855,713.
Intended use
Use this product only for the purpose it was designed for; refer to the data sheet and user
documentation. For the latest product information, contact your local supplier or visit us
online at www.utcfireandsecurity.com.
Manufacturer
UTC Fire & Security Americas Corporation, Inc.
1275 Red Fox Rd., Arden Hills, MN 55112-6943, USA
FCC compliance:
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the
FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is
operated in a residential environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority
to operate the equipment.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the affected equipment and the panel receiver to separate outlets, on different branch circuits.
• Consult the dealer or an experienced radio/TV technician for help.
FCC Part 15 registration number: B4Z-910C-SIMON.
Part 68. This equipment complies with Part 68 of the FCC rules and the requirements adopted by ACTA. A label on this
equipment contains a product identifier in the format US:AAAEQ##TXXXX. You must provide this number to the
telephone company upon request.
FCC Part 68 registration number: US:B4ZAL02B55910.
The plug and jack used to connect this equipment to the premises wiring and telephone network comply with the
applicable FCC Part 68 rules and requirements adopted by ACTA. A compliant telephone cord and modular plug is
provided with this product. It is designed to be connected to a compatible modular jack that is also compliant. See the
installation instructions for details.
The REN is used to determine the maximum number of devices that may be connected to your telephone line. Excessive
RENs on a telephone line may result in devices not ringing in response to an incoming call.
In most cases, the sum of all device RENs should not exceed five (5.0). To be certain of the number of devices that may
be connected to a line, as determined by the total RENs, contact your local telephone company.
For products approved after July 23, 2001, the REN is part of the identifier with the format US:AAAEQ##TXXXX. The digits
represented by ## are the REN without a decimal point. (For example, 03 is a REN of 0.3). For earlier products, the REN
is separately shown on the label.
Alarm dialing equipment must be able to seize the telephone line and place a call in an emergency situation. It must be
able to do this even if other equipment (telephone, answering system, computer modem, etc.) already has the telephone
line in use. To do so, alarm dialing equipment must be connected to a properly installed RJ31X jack that is electrically in
series and ahead of all other equipment attached to the same telephone line. If you have any questions concerning these
instructions, consult your local telephone company or a qualified installer about installing an RJ31X jack and alarm dialing
equipment for you.
If this equipment causes harm to the telephone network, the telephone company may temporarily disconnect your
service. The telephone company may notify you in advance, but when advance notice isn’t practical, they will notify you as
soon as possible and advise you of your right to file a complaint with the FCC.
The telephone company may make changes in their facilities, equipment, operations, or procedures that could affect the
operation of the equipment. If they do, they will notify you in advance so you can make the modifications to maintain
uninterrupted service.
This equipment may not be used on coin service provided by the telephone company. Connection to party line service is
subject to state tariffs. Contact the state public utility commission, public service commission, or corporation commission
for information.
If you experience trouble with this equipment, please contact the company that installed the equipment for service and
repair information. If the equipment is causing harm to the telephone network, the telephone company may ask you to
disconnect the equipment until the problem is resolved.
Contact information
For contact information, see www.utcfireandsecurity.com. or www.interlogix.com
Technical support
Toll-free: 888.437.3287 in the US including Alaska, Hawaii, Puerto Rico, and Canada.
Outside the tool-free area, contact your dealer.
Content
Preface#ii
Chapter 1 Introduction#1
Product overview#2
Chapter 2 Planning#7
Planning the installation#8
Emergency planning#19
Chapter 3 Installation#21
Panel connections#22
Hardwired device terminals#22
Telephone connections#24
Power transformer connection#26
Powering up the panel#27
X10 modules#28
Chapter 4 Programming#31
Programming overview#32
Menu navigation#34
System programming#37
Resetting memory to the factory defaults#56
Chapter 5 Testing#59
Control panel#60
Sensor testing#61
Phone communication#64
Central station communication#65
X10 operation#67
Chapter 6 Troubleshoot and support#69
Troubleshooting#70
Contacting us#72
Appendix A Specifications and tables#73
Specifications#74
SIA system requirements#74
Central station reporting#76
Sensor names#76
Simon XT TableTop Control Panel Installation Manual i
Preface
This is the Simon XT TableTop Control Panel Installation Manual for model 6001054-95R-TT. This document includes an overview of the product and detailed
instructions explaining:
• how to install; and
• how to set up the product for customer use.
There is also information describing how to contact technical support if you have
questions or concerns.
To use this document effectively, you should have a basic knowledge of electrical
wiring and low-voltage electrical connections.
Read these instructions and all ancillary documentation entirely before installing
or operating this product. The most current versions of this and related
documentation may be found on our website. Refer to Online resources on page
60 for instructions on accessing our online publication library.
A qualified service person, complying with all applicable codes, should perform
all required hardware installation.
Safety terms and symbols
These terms may appear in this manual:
Caution: Cautions identify conditions or practices that may result in damage to
the equipment or other property.
WARNING: Warnings identify conditions or practices that could result in
equipment damage or serious personal injury
ii Simon XT TableTop Control Panel Installation Manual
Chapter 1
Introduction
Summary
This chapter provides an overview of the system and an outline of the steps you
need to perform before you begin installing and configuring your security system.
In this chapter:
Content
Product overview#2
System components#3
Standard panel#4
Simon XT TableTop Control Panel Installation Manual 1
Chapter 1:
Product overview
This security system can be used as a fire warning system, an intrusion alarm
system, an emergency notification system, or any combination of the three. The
system (Figure 1) has three types of components:
• Self-contained control panel
• Devices that report to the panel
• Devices that respond to commands from the panel
Figure 1: Simon XT TableTop Control Panel system
Note: The universal, lamp, and appliance modules require a special transformer.
The self-contained panel provides the main processing unit for all system
functions. It receives and responds to signals from wireless sensors and wireless
touchpads throughout the premises. For monitored systems, the panel can be
connected to the premises phone line for central monitoring station reporting.
You can program the panel onsite from the keypad or remotely using Enterprise
Downloader software. See Chapter 4 “Programming” on page 31 for complete
onsite programming instructions.
2 Simon XT TableTop Control Panel Installation Manual
Chapter 1:
Device
Description
Door/window
sensor (60-670)
For intrusion protection, install door/window sensors on all ground-floor
doors and windows. At a minimum, install them in the following locations:
• All easily accessible exterior doors and windows.
• Interior doors leading into the garage.
• Doors to areas containing valuables such as cabinets and closets.
Indoor motion
sensor (60-639)
Indoor motion sensors are ideal whenever it is not practical to install
door/window sensors on every opening. Identify areas where an intruder is
likely to walk through. Large areas in an open floor plan, downstairs family
rooms, and hallways are typical locations for indoor motion sensors. For
installations with pets, use the SAW Pet Immune PIR (60-807).
Outdoor motion
sensor (60-639)
Use outdoor motion sensors to detect motion in a protected outdoor area.
Detected motion in this protected area can sound chimes or turn on outside
lights.
X10 module
When the panel is powered using the line carrier power transformer, the
system can work with any of the following modules:
• X10 lamp module (13-403)
• X10 appliance module (13-402)
• X10 power horn/remote siren module (13-398)
Freeze sensor (60-
742)
Freeze sensors detect low temperature conditions which may indicate a
furnace failure. The sensor contains a bimetallic thermal switch connected
to the built-in transmitter. The sensor transmits an alarm signal to the panel
when the surrounding temperature drops to about 41°F (5°C). When the
temperature rises to 50°F (10°C), the sensor transmits a restore signal.
Water sensor (60-
744)
Water sensors detect a water leak/rising water. The detector is connected to
the sensor by an 8-foot (2.4-meter) cable. Water that reaches both detector
contact points activates the sensor, causing it to transmit an alarm signal.
Smoke sensor (TX6010-01)
Smoke sensors provide fire protection by causing an alarm to sound
throughout the house. You can add smoke sensors near sleeping areas and
on every floor of the house. Avoid areas that could have some smoke or
exhaust such as attics, kitchens, above fireplaces, dusty locations, garages,
and areas with temperature extremes. In these areas you may want to
install Rate-of -Rise sensors to detect extreme temperature changes.
Emergency planning on page 15 and the instructions packaged with the
smoke sensor for complete placement information.
System components
The system can monitor up to 40 sensors and may use any of the devices listed
in Table 1
Table 1: Supported devices
Simon XT TableTop Control Panel Installation Manual 3
Chapter 1:
Device
Description
Carbon monoxide
(CO) alarm (60652-95)
The Learn Mode™ CO alarm alerts users to hazardous levels of carbon
monoxide gas. If dangerous concentrations of gas are present, the red
indicator light comes on, the internal siren goes off, and an alarm is
transmitted to the panel. The panel sounds its own alarm and reports to the
central station.
Keyfob (60-659)
The keyfob (keychain touchpad) lets you turn the system on and off from
right outside the home or activate a panic alarm if there is an emergency. If
you have X10 lamp modules, you can use keyfobs to turn all system
controlled lights on and off.
ELM (encrypted
learn mode) keyfob
(60-832)
The ELM (encrypted learn mode™) 2-button keyfob is an alkaline batterypowered, wireless touchpad that allows users to arm and disarm their
system, and activate a police or auxiliary panic alarm. Random encrypted
signal transmissions provide high security to help prevent signal copying.
Remote handheld
touchpad (60-671)
The remote handheld touchpad lets you turn the system on and off while in
the home, turn system controlled lights on and off (all or individual lights), or
activate a panic alarm if there is a nonmedical emergency.
Simon XT Table
Top Touchpad (80924-3-XT -TT)
The touchpad lets you turn the system on and off while in the home, turn
system controlled lights on and off (all or individual lights), or activate a
panic alarm if there is a nonmedical emergency.
Water-resistant
personal help
button (60-906-95)
The water-resistant personal help button is a wireless device used for
activating police or auxiliary alarms through your system. When the help
button is pressed, the light mounted under the cover will blink and an alarm
signal is transmitted.
Hardware
Capability
Power
Input for an AC step-down, plug-in style transformer.
One siren output,
up to two zone
inputs
Terminals for connecting hardware sirens or normally closed (NC) loop
switch circuits.
Phone line
connection
Allows panel to communicate with central monitoring station and/or remote
phone.
Caution: Do not use outdoor motion sensors for intrusion protection.
Standard panel
Table 2 describes the basic panel (out-of-box) hardware capabilities.
Table 2: Panel hardware capabilities
Inspect the package and contents for visible damage. If any components are
damaged or missing, do not use the unit; contact the supplier immediately. If you
need to return the unit, you must ship it in the original box.
4 Simon XT TableTop Control Panel Installation Manual
Chapter 1:
Simon XT TableTop Control Panel Installation Manual 5
Chapter 2
Planning
This chapter provides information to help you plan your installation to reduce time
and costs.
In this chapter:
Content
Planning the installation#8
Control panel location#8
Planning sensor types and locations#8
System configuration#13
Emergency planning#19
Simon XT TableTop Control Panel Installation Manual 7
Chapter 2:
Device
Recommended sensor group
Indoor motion sensor
17 (intrusion), 25 (chime)
Planning the installation
This section describes system capabilities to help you get familiar with your
system. The planning sheets contain tables that let you record the hardware and
programming configuration of your system. Complete all of the information ahead
of time to help prepare for system installation. Refer to Sensor names on page
64 for sensor name segments listed alphabetically and by index number.
Control panel location
Locate the panel where alarm sounds can be heard and where the panel will be
easily accessible for operation. Do not install the panel near a window or door
where it can be reached easily by an intruder.
Planning sensor types and locations
The first step to an easy and successful installation is to decide what areas or
items to protect, which lights or appliances to operate, and the best location for
the panel, touchpad, sensors, and sirens.
Metal objects, mirrors, and metallic wallpaper can block signals sent by the
wireless sensors. Make sure there are no metal objects in the way when
installing the system.
Use Table 3 below, Recommended sensor groups and Table 4 on page 9,
Sensor group characteristics to determine the appropriate sensor type for the
sensors you will be adding. Use Table 5 on page 11, Sensor
assignments/locations to document the planned sensor information. You will
need to understand the application for each sensor. For example, keyfobs are
typically programmed as sensor group 01 (portable panic) and used to send an
intrusion alarm to a central monitoring station. This sensor type is instant
intrusion, it does not require restoral or supervisory communication with the panel
and it is active in the following arming levels:
• Level 0 - Sub-disarm.
• Level 1 - Disarm.
• Level 2 - Arm doors and windows.
• Level 3 - Arm motion sensors.
• Level 4 - Arm doors/windows and motion sensors.
Table 3: Recommended sensor groups
8 Simon XT TableTop Control Panel Installation Manual
Special intrusion: such as gun cabinets and wall safes.
DTM (tamper only).
Intrusion
I Y Y
1234
09
Special intrusion: such as gun cabinets and wall safes.
Intrusion
S Y Y
1234
Table 4: Sensor group characteristics
Simon XT TableTop Control Panel Installation Manual 9
Chapter 2:
Type
Name/application
Siren type
Delay
Restoral
Supervisor
yry
Active
in
arming
levels
10
Entry/exit delay: A delay that requires a standard delay
time. chime.
Intrusion
S Y Y
24
13
Instant perimeter: Exterior doors and windows. chime.
Intrusion
I Y Y
24
14
Instant interior: Interior doors.
Intrusion
F Y Y
234
15
Instant interior: Interior PIR motion sensors.
Intrusion
F Y Y
234
16
Instant interior: Interior doors.
Intrusion
F Y Y
34
17
Instant interior: PIR motion sensors and Sound
sensors
Intrusion
F N Y
34
18
Instant interior: Cross-zone PIR motion sensors.
Intrusion
F N Y
34
19
Delayed interior: Interior doors that initiate a delay
before going into alarm.
Intrusion
S Y Y
34
20
Delayed interior: PIR motion sensors that initiate a
delay before going into alarm.
Intrusion
S N Y
34
21
Local instant interior: 24-hour local alarm zone
protecting anything that opens and closes. No report.
Intrusion
I Y Y
1234
22
Local delayed interior: same as group 21, plus
activation initiates a delay before going into alarm. No
report.
Intrusion
S Y Y
1234
23
Local instant auxiliary: 24-hour local alarm zone
protecting anything that opens and closes. No report.
Emergency
I Y Y
01234
24
Local instant auxiliary: 24-hour local alarm zone
protecting anything that opens and closes. Sirens shut
off at restoral. No report.
Emergency
I Y Y
01234
25
Local special chime: notify the user when a door is
opened.
Three
beeps
I N Y
01234
26
Fire: 24-hour fire, rate-of-rise heat, and smoke
sensors.
Fire I Y Y 01234
27
Lamp control or other customer feature. No report
Silent
I Y Y
01234
28
PIR motion sensor, sound sensor, or pressure mat. RF
thermostat. No report.
Silent
I N Y
01234
29
Auxiliary: freeze sensors.
Trouble
beeps
I Y Y
01234
32
PIR motion sensor or sound sensor. No report
Silent
I N N
01234
34
Carbon monoxide alarm
Emergency
I Y Y
01234
35
Entry/exit delay interior PIR motion.
Intrusion
S N Y
234
10 Simon XT TableTop Control Panel Installation Manual
Chapter 2:
Type
Name/application
Siren type
Delay
Restoral
Supervisor
yry
Active
in
arming
levels
36
Special Intrusion: such as gun cabinets and wall safes.
Reports as tamper if tripped.
Intrusion
I Y Y
1234
37
Light switch control: X10 modules turn either on or off
when a door is opened.
Silent
I N Y
01234
38
Auxiliary: water sensors.
Trouble
beeps
I Y Y
01234
39
Local instant interior: 24-hour local alarm zone
protecting anything that opens and closes. No report.
Intrusion
I Y Y
1234
40
Local special chime.
Three
beeps
I Y Y
01234
Sensor
#
Device
Sensor
group
Sensor name/location
Notes
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
Table 5: Sensor assignments/locations
Simon XT TableTop Control Panel Installation Manual 11
Chapter 2:
Sensor
#
Device
Sensor
group
Sensor name/location
Notes
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Cross-zoning
Cross-zoning (two-trip) refers to two different group 18 sensors that must be
tripped within two minutes of each other to report an alarm to the central station.
Figure 2 shows the path of a person walking from the kitchen to the living room.
When the person is detected walking through the kitchen, the motion sensor in
the kitchen is tripped, sounding a local alarm. If motion is detected by the living
room motion sensor within two minutes, an alarm report will be sent to the central
station.
12 Simon XT TableTop Control Panel Installation Manual
Chapter 2:
Function
Default
Delete
Range
Access
codea
Installer
settings
Access codes menu
Dealer code
654321,
54321, 4321,
or 321
None
3 to 6 digits
D
Installer code
654321,
54321, 4321,
or 321
None
3 to 6 digits
D, I
Master code
123456,
12345, 1234,
or 123
None
3 to 6 digits
D, I, M
User code 1
None
None
3 to 6 digits
D, I, M
User code 2
None
None
3 to 6 digits
D, I, M
User code 3
None
None
3 to 6 digits
D, I, M
Figure 2: Cross-zone diagram
Note: We do not recommend cross-zoning for exit/entry zones. Each zone can
individually protect the intended area.
System configuration
Table 6 is a worksheet for you to record the desired values for each
programming option. For each option, the default value, effect of deletion
(pressing Disarm while editing), range, and programming privilege are also listed.
Each option is described in more detail in “Programming” on page 32.
Table 6: System programming menu options
Simon XT TableTop Control Panel Installation Manual 13
Chapter 2:
Function
Default
Delete
Range
Access
codea
Installer
settings
User code 4
None
None
3 to 6 digits
D, I, M
User code 5
None
None
3 to 6 digits
D, I, M
User code 6
None
None
3 to 6 digits
D, I, M
User code 7
None
None
3 to 6 digits
D, I, M
User code 8
None
None
3 to 6 digits
D, I, M
Duress code
None
None
3 to 6 digits
D, I, M
Code length
4 4 3 to 6
D
Security menu
Account
number
00000
00000
0 to FFFFFFFFFF
D, I
Downloader
code
12345
12345
00000 to 99999
D
Phone lock
Off
Off
On/Off
D
Autoarm
On
Off
On/Off
D, I
Exit extension
On
Off
On/Off
D, I
Secure arming
Off
Off
On/Off
D, I
No arm low
battery
Off
Off
On/Off
D, I
Quick exit
Off
Off
On/Off
D, I
Downloader
enable
On
Off
On/Off
D, I, M
Supervisory
protest
Off
Off
On/Off
D, I
Phone # menu
Phone #1
None
None
26 digits
D Phone #2
None
None
26 digits
D Phone #3
None
None
26 digits
D, I
Phone #4
None
None
26 digits
D, I, M
Downloader
number
None
None
26 digits
D, I
Phone options menu
Manual phone
test
On
Off
On/Off
D, I
Fail to
communicate
On
Off
On/Off
D, I
14 Simon XT TableTop Control Panel Installation Manual
Chapter 2:
Function
Default
Delete
Range
Access
codea
Installer
settings
DTMF
On
(Touchtone)
Off
(Pulse)
On/Off
D, I
300 bps baud
rate
On (300 bps)
Off (110
bps)
On/Off
D, I
Ring/hang/ring
1
Off
1 to 7, Off
D, I
Dial delay
30 seconds
15 sec.
15 to 45 sec.
D, I
Call waiting
code
None
None
26 digits
D, I
Sensors menu
Learn sensors
D, I
Delete sensors
D, I
Edit sensors
D, I
Reporting menu
Report options
Opening
reports
Off
Off
On/Off
D, I
Closing reports
Off
Off
On/Off
D, I
Forced armed
Off
Off
On/Off
D, I
AC power
failure report
Off
Off
5 to 254 minutes, Off
D, I
Low CPU
battery report
On
Off
On/Off
D, I
Sensor alarm
restoral report
Off
Off
1 to 3, Off
D, I
24-hour sensor
tamper report
Off
Off
On/Off
D, I
Supervisory/ta
mper report
Off
Off
On/Off
D, I
No usage
Off
Off
2 to 254 days, Off
D, I
Swinger
shutdown
On
Off
On/Off
D, I
Programming
report
Off
Off
On/Off
D, I
Fire alarm
verification
Off
Off
On/Off
D, I
Simon XT TableTop Control Panel Installation Manual 15
Chapter 2:
Function
Default
Delete
Range
Access
codea
Installer
settings
Report
communication
modes
Phone 1 report
mode
Off
Off
ALL SIA
ALL CID
Alarms SIA
Alarms CID
Nonalarms SIA
Nonalarms CID
Backup SIA
Backup CID
Voice dialer
Off
D
Phone 2 report
mode
Off
Off D
Phone 3 report
mode
Off
Off
D, I
Phone 4 report
mode
Off
Off
D, I
Timers menu
Latchkey time
None
None
12:00 midnight to 11:59 PM,
None
D, I, M
Entry delay
30 sec.
30 sec.
30 to 240 sec.
D, I
Exit delay
60 Seconds
45 sec.
45 to 254 sec.
D, I
No activity
timeout
Off
Off
2 to 24 hours
D, I
Auto phone
test
Off
Off
1 to 254 days
D, I
Supervisory
time
Midnight
None
12:00 midnight to 11:59 PM,
None
D, I
Alarm cancel
6 minutes
Off
6 to 255 minutes, Off
D, I
RF timeout
(supsync)
12 hours
12 hours
2 to 36 hours
D, I
Fail to open
time
Off
Off
12:00 midnight to 11:59 PM,
Off
D, I
Fail to close
time
Off
Off
12:00 midnight to 11:59 PM,
Off
D, I
Siren timeout
5 minutes
Off - No
timeout
2 to 254 minutes, Off
D, I
Arming LED
shutdown
Off
Off
On/Off
D, I
Unvacated
premises
On
Off
On/Off
D, I
Smoke
supervision
On
Off
On/Off
D, I
16 Simon XT TableTop Control Panel Installation Manual
Chapter 2:
Function
Default
Delete
Range
Access
codea
Installer
settings
Touchpad options menu
Keyfob no
delay
Off
Off
On/Off
D, I
Panic alarms
On
Off
On/Off
D, I
Remote
touchpad
arming
Off
Off
On/Off
D, I
System options menu
RF Jam detect
Off
Off
On/Off
D, I
Demo mode
Off
Off
On/Off
D, I
HW1 function
1
Off
1 - Interior siren output
2 - Output activated when
armed
3 - Output activated when
disarmed
4 - FTC output (FTC must
be on)
5 - Output activated for
alarm
Off - No output
D
24-hour clock
Off
Off
On/Off
D, I
Siren options menu
Panel piezo
beeps
On
Off
On/Off
D, I, M
Panel voice
On
Off
On/Off
D, I, M
Panel piezo
alarms
On
Off
On/Off
D, I, M
Trouble beeps
On
Off
On/Off
D, I
Voice chime
Off
Off
Off - No voice chime
1 - Voice chime (sensor
name)
2- Chime bell
3- Soft chime bell
D, I
Status beeps
volume
7 7 1 - 10
D, I, M
Hardwired
siren
supervision
Off
Off
On/Off
D, I
Simon XT TableTop Control Panel Installation Manual 17