IEI Technology prox.pad Plus Assembly instructions

prox.pad PlusTM
IR Access System
Installer Guide
This equipment is designed to be installed and serviced by security and lock industry professionals.
Please refer to the table of contents and list of illustrations on page 3.
Access system programming: This access system possesses serial communications capability and can be managed as part of an
overall access control system with Hub Manager ProfessionalTM software. See the inside cover for system requirements.
Optional Keypad Programming: The pro .pad Plus IR unit can be programmed manually using the keypad on each unit and
without the use of a personal computer (PC) and software. This manual contains the optional keypad programming instructions.
Keypad programming can be helpful to get a door or doors up and running prior to having the availability of the host computer. In all
cases, the personal computer programming options supersede the keypad programming options.
Page 1 of 32 ocument # 6105681, Rev 1.1, 2a
Service Company, Put Contact Information Here:
Company Name: __________________________________________
Service Num er: __________________________________________
15.21 Information to User
Any changes or modifications not e pressly
approved by the party responsible for compliance
could void the user's authority to operate the
equipment.

prox.pad Plus IR Access System Installer Guide
Access system programming - System Requirements
●Hub Manager ProfessionalTM access control software version 7.2 or higher (part number HUBSWR includes software
installation instructions)
●LS Link PDA Software or DTD (Data Transfer Device)
PC Hardware Requirements
●IBM-compatible Pentium-class computer
●30MB available hard disk space
●VGA monitor or better, 800 600 resolution recommended
●CD-ROM or DVD-ROM drive
●Mouse
Operating System List
●Windows 98
●Windows 2000
●Windows XP
Refer to our we site at www.ieib.com for any changes to these specifications.
Technical Support
Service Company: To contact IEI’s Technical Support department, call 1- 800-343-9502. Questions can also be submitted through
our website at www.ieib.com. You can also download an electronic version of this manual from this site.
End User: Please contact your service company.
Page 2 of 32 ocument # 6105681, Rev 1.1, 2a

prox.pad Plus IR Access System Installer Guide
Table of Contents
Description.............................................................................................................................................................................4
prox.pad Plus IR Specifications.............................................................................................................................................6
prox.pad Plus IR Default Settings..........................................................................................................................................7
Daylight Sa ing Time.............................................................................................................................................................7
prox.pad Plus IR LED Indicators/Sounder Operations...........................................................................................................8
prox.pad Plus IR Component O er iew.................................................................................................................................9
prox.pad Plus IR Control Board O er iew...........................................................................................................................10
Communication Board O er iew.........................................................................................................................................11
Performing a Wall Mounted Installation...............................................................................................................................12
Pre enting Possible Water Problems..................................................................................................................................13
Performing a Glass Mounted Installation.............................................................................................................................14
Performing a Secure Installation..........................................................................................................................................15
Installing a Tamper Switch...................................................................................................................................................17
Mounting o er a metal or plastic single gang J-Box.......................................................................................................17
Wall mounting.................................................................................................................................................................17
Remo ing/Inserting Circuit Boards......................................................................................................................................18
Connecting the Communication Board to the Main Control Board......................................................................................19
Wiring the Main Relay to Fail Secure Lock..........................................................................................................................20
Wiring the Main Relay to Fail Safe Lock..............................................................................................................................21
Wiring the Aux Relay For Alarm Shunt................................................................................................................................22
Wiring the Aux Relay For Propped or Forced Door.............................................................................................................23
Wiring the Door Contact Input.............................................................................................................................................24
Wiring an External REX Switch (Request to Exit)................................................................................................................25
Programming.......................................................................................................................................................................26
Entering Program Mode......................................................................................................................................................26
Changing the Master Code..................................................................................................................................................26
Programming a Super isor Code........................................................................................................................................26
prox.pad Plus IR User Types...............................................................................................................................................27
Programming Options Chart................................................................................................................................................28
List of Illustrations
Figure 1: prox.pad Plus IR Component O er iew..................................................................................................................9
Figure 2: Identifying Pin Connectors (Main Control Board)..................................................................................................10
Figure 3: Identifying Pin Connectors (Communication Board).............................................................................................11
Figure 4: Performing a Wall Mounted Installation................................................................................................................12
Figure 5: Gasket Installation for Exterior Applications.........................................................................................................13
Figure 6: Performing a Glass Mounted Installation..............................................................................................................14
Figure 7: Performing a Secure Installation...........................................................................................................................16
Figure 8: Tamper Switch Locations.....................................................................................................................................17
Figure 9: Remo ing/Inserting Printed Circuit Board.............................................................................................................18
Figure 10: Connecting the Communication Board to the Main Control Board.....................................................................19
Figure 11: Electric Strike (Fail Secure) Wiring Diagram......................................................................................................20
Figure 12: Maglock (Fail Safe) Wiring Diagram...................................................................................................................21
Figure 13: Wiring the Aux Relay for Alarm Shunt................................................................................................................22
Figure 14: Wiring the Aux Relay for Forced or Propped Door.............................................................................................23
Figure 15: Wiring the Door Contact Input............................................................................................................................24
Figure 16: Wiring the REX Switch.......................................................................................................................................25
ocument # 6105681, Rev 1.1, 2a Page 3 of 32

prox.pad Plus IR Access System Installer Guide
escription
The pro .pad Plus IR unit is a single door access system that is programmed and managed from a personal computer using Hub
Manager Professional software (version 7.2 or higher). The pro .pad Plus IR unit is equipped with IR communications which is used
to communicate with LS Link PDA software. In addition, you can program the unit via the keypad.
The pro .pad Plus IR unit is unique in that no separate controller is needed and there is no need to run cables from a reader to a
control. The unit is self-contained and includes built in HID pro imity and keypad.
Important features include:
●Managed with Hub Manager™ Professional access software
●IR Communication with PDA via LS Link PDA Software or DTD (Data Transfer Device)
●No separate control to install
●Eliminate costly reader wiring
●2000 users per door
●2000 event audit trail
●Integrated-HID pro imity
●Card, code, card and/or code
●Locate pro imity 10 ft from control
●Indoor and outdoor
●Glass mount kit
●Door monitor
●Main relay for lock
●Programmable au iliary relay
●Local sounder for alerts
●Option for keypad programming
Page 4 of 32 ocument # 6105681, Rev 1.1, 2a

prox.pad Plus IR Access System Installer Guide
Table 1: IEI-Supplied Parts/Optional Items
Quantity escription
1 Keypad/control unit assembly, with Prox Sensor, Backplate, hex socket screw
1 Communication Board
1 Filler Piece/REX Button
1 Press to Exit Label
4 Wall Anchors
4 Keypad Mounting Screws
5 Communication Board Mounting Screws
1 Antenna Backplate for remote mounting
1 Silicone Rubber “dogbone”
4 Self-Adhering Pads (for glass mounting)
1 Installer Guide
4 Cable Assemblies
1 Tamper Screw
1 Hex Wrench
Optional Items
1 Hub ManagerTM Professional PC Software ( ersion 7.2 or higher required)
1 PDA using LS Link PDA Software
1 DTD (Data Transfer De ice
1 prox.pad Plus IR Replacement Battery: Panasonic BR1225, Renata CR1225 or Varta
CR1225; Refer to caution below.
lots of 25 only ProxKey KeyFobs (IEI Part Number: 0297301)
lots of 25 only ProxCard II Cards (IEI Part Number: 0297401)
ocument # 6105681, Rev 1.1, 2a Page 5 of 32
Caution: Replace battery with types listed above only. Use of
another battery may present risk of fire or e plosion. Battery may
e plode if mistreated. Do not recharge, disassemble or dispose of
battery in fire.

prox.pad Plus IR Access System Installer Guide
prox.pad Plus IR Specifications
Table 2: prox.pad Plus IR Specifications
Electrical
Power Supply/Current Requirements 12-24 VDC, linear filtered and regulated power supply; 150mA
Wiring
Remote Antenna Cable (if installing in a
secured configuration) [ALPHA 1294C (22AWG) 4-conductor, stranded and shielded]
Power Supply Cable 18AWG - 22AWG 2-wire stranded (depends upon distance)
Door Lock Cable 18AWG - 22AWG 2-wire stranded (depends upon distance)
Door Monitor Cable 18AWG - 22AWG 2-wire stranded (depends upon distance)
REX Cable [ALPHA 2421C 18 AWG or ALPHA 1292C 22 AWG, 2-conductor,
stranded and shielded] (if using remote switch)
Mechanical
Height 5.25 in (13.3 cm)
Width 2.75 in (7 cm)
Depth 1.625 in (4.13 cm)
Relay Outputs
Main Relay Form C (switches up to 2A)
Program for either timed (1-99 sec) or toggle
Aux Relay Form C (switches up to 1A)
One of three functions can be programmed: Alarm Shunt Relay,
Forced Door Relay, or Propped Door Relay
Monitor Inputs
Door Position Switch Normally Closed, Dry Contact
Other Outputs
Infrared Output For communicating to the LS Link PDA Software for programming
Sounder 4000 Hz, defeatable
Bi-Color LED Red/Green
Yellow LED
Compatible Proximity Cards (All HI cards up to 40 bits, including the following)
Prox Card II, IsoProx II, DuoProx II, Proxkey FOB
Unit Capacity
Users 2000 Maximum (each user can ha e a card, PIN or both)
Transactions 2000 Maximum (includes e ent number, time, date, and user
number if applicable)
Environmental
Operating En ironment Indoor or Outdoor
Operating Temperature -31° to 150° F (-35° to 66° C)
Operating Humidity 5% to 95% relati e humidity, non-condensing
Page 6 of 32 ocument # 6105681, Rev 1.1, 2a

prox.pad Plus IR Access System Installer Guide
prox.pad Plus IR efault Settings
The table below lists the default settings for the pro .pad Plus IR unit as shipped from the factory. Subsequent sections in this chapter
e plain how to change these default settings or program additional functions.
Table 3: prox.pad Plus IR efault Settings
Option efault Setting Option efault Setting
Master Code 1234 Lock Output Time 5 Seconds
Audio Keypress Feedback Enabled Visual Keypress Feedback Enabled
Auxiliary Relay Alarm Shunt Auto-Entry Disabled
Card/PIN Program Mode Disabled User Lockout Enabled
Internal REX Switch Disabled Timezones Disabled
Auto-Unlock Disabled First-In Auto-Unlock Disabled
DST Time/Date Format US Daylight Sa ing Time Enabled
Anti-Passback Enabled Anti-Passback Timer 1 second
Audio Alert 1 Forced Door Audio Alert Audio Alert 2 Propped Door Audio Alert
Forced Door Time 10 Seconds Propped Door Time 30 Seconds
In alid PIN Lockout Count 3 Attempts In alid PIN Lockout Time 10 Seconds
Extended Unlock Time 10 Seconds 26-Bit Facility Code 11
aylight Saving Time
The pro .pad Plus IR supports the following Daylight Saving Time formats:
United States (US):
Begins: Second Sunday in March at 2:00 AM
Ends: First Sunday in November at 2:00 AM
European (EU):
Begins: Last Sunday in March at 2:00 AM
Ends: Last Sunday in October at 2:00 AM
ocument # 6105681, Rev 1.1, 2a Page 7 of 32

prox.pad Plus IR Access System Installer Guide
prox.pad Plus IR LE Indicators/Sounder Operations
The table below describes the various LED and Sounder indications used in the pro .pad Plus IR.
Table 4: prox.pad Plus IR LE Indicators/Sounder Operations
LE /Sounder Visual/Audible Condition escription
Yellow LE
Slow blink Unit is in Program mode
Rapid blink Verify mode is acti e
Steady Program error; error lockout (no keypress feedback)
Very rapid blink Memory erase is in progress (command 46)
“Pulsing” rapid blink Batch program of cards in progress (command 56); block
delete of users (command 58)
Bi-color LE
Steady red Lock is locked
Steady green Lock is energized (timed or latched)
Green Drop Out Auto-Unlock is Acti e
Quick double red/green flash Prox card read correctly
Alternating red/green Waiting for second PIN or “card and code” user
All LE 's Rapid red, yellow, green
sequencing Power on/reset
Sounder
(system)
Short beep (100 ms) e ery 2
seconds Audio Alert 2 is acti e
Sounder 1/2 sec on, 1/2 sec off Audio Alert 1 is acti e
3 slow beeps (250ms), followed by
a double-beep with yellow LED on
during both double-beeps
Indicates self-test
Sounder (after
PIN) 3 rapid beeps PIN not found
Double Beep User Lockout Canceled
Pair of Double Beep User Lockout Acti ated
1 Long Beep Followed by 1 Short
Beep Access Denied – User Disabled
1 Long Beep Followed by 2 Short
Beeps Access Denied – Back Timezone
1 Long Beep Followed by 3 Short
Beeps Access Denied – User Locked Out
4 Quick Beeps First-In Auto-Unlock Acti ated
6 Quick Beeps Toggle Mode Acti ated
Page 8 of 32 ocument # 6105681, Rev 1.1, 2a

prox.pad Plus IR Access System Installer Guide
prox.pad Plus IR Component Overview
The following diagram illustrates all the various components of the pro .pad Plus IR. Please not the location of the IR (Infrared)
communication port on the lower right corner of the communication board in the rear housing.
ocument # 6105681, Rev 1.1, 2a Page 9 of 32
Figure 1: prox.pad Plus IR Component Overview

prox.pad Plus IR Access System Installer Guide
prox.pad Plus IR Control Board Overview
The diagram below illustrates the connectors on the pro .pad Plus IR main circuit board. The power connections are made on the
communication board discussed in the ne t section.
Page 10 of 32 ocument # 6105681, Rev 1.1, 2a
Figure 2: Identifying Pin Connectors (Main Control Board)
Note: If you are not using door contacts, you must twist the white
and orange wires together for the REX to work.

prox.pad Plus IR Access System Installer Guide
Communication Board Overview
The following diagram shows the various connectors and wire connections on the communication board. The communication board is
packaged separately from the control unit to allow you access to the backplate mounting holes and wire knockouts. You must secure
communication board to the backplate using the five supplied mounting screws.
Please note the system power is connected to P2 in the upper right. You must also set the voltage selection jumper (JP1) to the correct
setting. This is discussed in more detail in a later section.
ocument # 6105681, Rev 1.1, 2a Page 11 of 32
Figure 3: Identifying Pin Connectors (Communication Board)

prox.pad Plus IR Access System Installer Guide
Performing a Wall Mounted Installation
This section provides general considerations when performing a wall mounted installation. Typically, the pro .pad Plus IR unit is
mounted on a flat, level surface (drywall, masonry, wood, etc.) e terior to the room to be accessed. A single-gang electrical bo (or
back bo ) can be used. Typically, the pro .pad Plus IR unit is wall mounted outside the access area on the unsecured side of the door.
Figure 4 below illustrates the components on the pro .pad Plus IR unit used for wall mounting. Two single-gang bo holes align with
two corresponding holes in the single-gang bo . A wire e it knockout is supplied through which the pro .pad Plus IR wiring is pulled.
A typical wall mounted installation proceeds as follows:
1. Install a single-gang bo in the desired location.
2. Punch out the two single-gang bo knockouts on the controller backplate of the pro .pad Plus IR unit.
3. Disconnect the controller backplate of the pro .pad Plus IR unit from the front keypad/controller. Align the two single-gang
bo holes on the controller backplate over the two corresponding holes on the single-gang bo , previously secured at step 1.
4. Secure the backplate to the single-gang bo by inserting/tightening two screws into the two single-gang bo holes.
5. Connect the front keypad/controller to the back housing.
6. Pull the pro .pad Plus IR wiring through the wiring e it as appropriate.
7. Install the tamper screw into the hole at the bottom front of the enclosure using a #6 spanner bit (not included, but available
from IEI).
Page 12 of 32 ocument # 6105681, Rev 1.1, 2a
Figure 4: Performing a Wall Mounted Installation

prox.pad Plus IR Access System Installer Guide
Preventing Possible Water Problems
To avoid damage to electronics caused by water when used on e terior applications, follow these instructions carefully.
1. Do NOT seal the cover and base together.
Keypads are designed to direct any water that enters the two constituent pieces, base and cover, towards the bottom and out a
drain or weep hole.
2. Use the supplied gasket for e terior applications.
3. Use silicone to seal wire runs and mounting holes.
4. Bend the wires before they enter the case to form a drip loop.
Water can follow the wires to the connection point of the circuit board and short out the terminals to which the wires are
connected.
ocument # 6105681, Rev 1.1, 2a Page 13 of 32
Figure 5: Gasket Installation for Exterior
Applications

prox.pad Plus IR Access System Installer Guide
Performing a Glass Mounted Installation
Figure 5 below shows the four IEI-supplied pressure-sensitive adhesive pads and the two side cut-outs used for this installation. In this
configuration, the pro .pad Plus IR unit is affi ed with the four self-adhesive pads to the glass or the glass window adjacent to the
door being accessed, on the interior side of the glass. One of the two side cut-outs is used to bring the wires out of the side of the
pro .pad Plus IR case.
A typical glass mounted installation proceeds as follows:
1. Disconnect the back housing from the front keypad/ controller. Remove the tape from the four self-adhesive pads on the back
housing and apply the pads to the four corners of the backplate.
2. Affi the back housing to the glass door or the glass window adjacent to the door being accessed, on the interior side of the
glass.
3. Determine which of the two side cut-outs on the back housing to use for the wiring and remove that cut-out using the
appropriate cutting tool.
4. Pull the wiring through the selected side cut-out as required.
5. Connect the front keypad/controller to the back housing.
6. Install the tamper screw into the hole at the bottom front of the enclosure using a #6 spanner bit (not included, but available
from IEI).
Page 14 of 32 ocument # 6105681, Rev 1.1, 2a
Figure 6: Performing a Glass Mounted Installation

prox.pad Plus IR Access System Installer Guide
Performing a Secure Installation
In this configuration, the pro .pad Plus IR pro antenna housing is removed from the keypad/controller and located a ma imum of 10
feet away. The controller/keypad is located inside the secure area.
1. Remove the antenna housing from the pro .pad Plus IR keypad/controller as described below:
●Disconnect the backplate of the pro .pad Plus IR unit from the front keypad/controller.
●When handling the main printed circuit board, to guard against possible static discharges, touch a grounded object before
touching the pro .pad Plus IR unit. Remove the main printed circuit board by pressing the two spring tabs in the
direction of the arrows as shown in the diagram on the ne t page. Be careful with the wires.
●Pull on the main circuit board and remove the wire harness from P4 from the bottom of the main board. A ribbon cable
now holds the main board to the keypad board. Do not pull this ribbon cable out of its connector! Once the main board is
removed, you can access the interior of the antenna.
●Remove the antenna housing from the keypad/controller by pressing the labeled four secure tabs inward (see diagram on
the ne t page) until the antenna housing pops out.
2. Prepare the wiring and e tension wiring as follows:
●Cut off the plastic end of the pro .pad Plus IR antenna housing harness.
●Splice the recommended remote antenna cable Alpha 1294C (22AWG, stranded and shielded), 10-foot ma imum length,
to the properly cut antenna cable using standard electrical techniques.
3. Mount the antenna backplate in a vertical orientation and secure it to the wall through the two screw holes using two IEI-
provided screws. Ensure that the two weep holes, provided to remove possible moisture, are positioned on the bottom. The
wiring e its in the antenna backplate. (Four e ternal cut-outs on the antenna backplate match the four spring-loaded tabs on
the antenna.)
NOTE: Two side cut-outs are furnished on the antenna backplate for the wiring, if the installation does not permit the
wiring to run through the wall. These must be cut out to be used.
●Once the antenna backplate is mounted properly, align the antenna to the backplate and connect the antenna to the
antenna backplate. The large tab in the center of the antenna assembly must be broken off before being attached to the
antenna backplate.
4. Run the antenna wiring back to the secure keypad/controller and connect it to the main circuit board, using the 10-inch 4-wire
harness (red, black, white, and white) that you plug into connector P4 on the controller board. Connect the red wire of the
antenna to the red wire of the P4 harness, etc. Seal the wire holes with silicone.
5. Select Filler or Request to E it (REX) operation as follows:
●If you elect to use the filler piece as a REX switch, return to the keypad/controller and break off two tabs on the filler
piece as illustrated in the diagram. The filler piece replaces the antenna on the front of the keypad/controller for secure
installations. Refer to the programming options chart for programming the internal REX.
●If the filler piece is not to be used as a REX switch, do not remove the two tabs.
●Select “Filler or “REX” operation and affi the appropriate IEI-provided label to the filler piece. For Filler operation, no
tabs are broken off the filler piece, which merely sits in place of the remotely located antenna, once the main circuit
board and cabling are replaced. For REX operation, break off the labeled tabs, which allows a spring-loaded tab to
engage the REX switch on the main circuit board and open the door.
●Replace the main circuit board into the keypad/controller and pin connector P4 to the main circuit board.
●Connect the front keypad/controller of the unit to the back housing.
●Secure with a he socket screw using the supplied he wrench, or secure with a tamper screw (optional tool required).
ocument # 6105681, Rev 1.1, 2a Page 15 of 32

prox.pad Plus IR Access System Installer Guide
Page 16 of 32 ocument # 6105681, Rev 1.1, 2a
For the remote antenna wire, use ALPHA 1294C (22AWG) 4-wire, stranded and
shielded cable. The cable shield drain wire must be grounded at the reader end to
P1, pin 4 connection (DC Power Supply Ground).
Figure 7: Performing a Secure Installation

prox.pad Plus IR Access System Installer Guide
Installing a Tamper Switch
A tamper switch must be installed in one of the configurations described below and connected to an intrusion alarm system.
Mounting over a metal or plastic single gang J-Box
1. Use an Ademco 945T magnet and reed switch (or equivalent) with foam-backed adhesive tape.
2. Clip the screw mounting tabs from both the magnet and reed switch using pliers or a wire cutter.
3. With the pro .pad Plus IR base removed, stick the magnet to the Keypad board in location A, using the adhesive tape.
4. Stick the reed switch on the inside of the long side of the J-bo in the upper right-hand corner, using the adhesive tape. The
switch should be flush with the edge of the J-bo .
Wall mounting
1. Use an Ademco PR-20451 magnet and reed switch (or equivalent).
2. Mount the magnet at location B, using one of the adhesive pads provided.
3. Drill a 3/8 inch hole in the wall behind the magnet location, feed the switch wire through the wall and press the switch into
place.
ocument # 6105681, Rev 1.1, 2a Page 17 of 32
Figure 8: Tamper Switch Locations

prox.pad Plus IR Access System Installer Guide
Removing/Inserting Circuit Boards
If you must remove or insert the main circuit board from/into the pro .pad Plus IR controller/keypad, follow the steps below.
1. Disconnect the back housing of the pro .pad Plus IR unit from the front keypad/controller.
2. (When handling the main printed circuit oard, to guard against possi le static discharges, hold the oard y its
edges with one hand and then touch a grounded o ject efore touching the prox.pad Plus IR unit.) Remove the main
printed circuit board by pressing the two spring tabs in the direction of the arrows as shown in Figure 8. Be careful with the
wires.
3. Fold up the main circuit board and remove the P4 connector (a 4-conductor harness) from the bottom of the board.
4. To re-insert, replace the main circuit board into the keypad/controller and the P4 connector to the main circuit board.
5. Connect the keypad/controller to the back housing.
Page 18 of 32 ocument # 6105681, Rev 1.1, 2a
Figure 9: Removing/Inserting Printed Circuit Board

prox.pad Plus IR Access System Installer Guide
Connecting the Communication Board to the Main Control Board
The pro .pad Plus IR is composed of two circuit boards, the control board and the communication board, which is mounted in the rear
keypad housing. The communication board contains the infrared communications circuitry used for communicating to a PDA device,
as well as the power supply. The power supply circuit should e powered with 12 or 24 VDC. This is selecta le y jumper JP1;
24 VDC is the factory setting.
The pro .pad Plus IR unit is powered through P2 on the communication board. Connector P1 on the communication board then
provides power to the keypad control board using the supplied wire harness; this connects to P5 on the control board. The two data
wires for infrared communications are also on this same wire harness.
ocument # 6105681, Rev 1.1, 2a Page 19 of 32
Figure 10: Connecting the Communication Board to the Main Control Board

prox.pad Plus IR Access System Installer Guide
Wiring the Main Relay to Fail Secure Lock
The door lock is wired to connector P1 on the pro .pad Plus IR main circuit board. The following section describes how to wire an
Electric Door Strike.
Power for the pro .pad Plus IR unit must be from a 12-24 volt DC linear, filtered and regulated power supply. It is typical for the
chosen power supply to power BOTH the pro .pad Plus IR unit and the selected locking device. When using one power supply for
both the pro .pad Plus IR unit and locking device, be sure to include both devices in your current requirements calculations.
NOTE: IEI recommends that you ground the power supply to earth ground.
Page 20 of 32 ocument # 6105681, Rev 1.1, 2a
Figure 11: Electric Strike (Fail Secure) Wiring iagram