Optiquest iRIS 320, iRIS 220 User Manual

iRIS 220
iRIS 320

User Guide

For Software

Version: V1.19

(Requires Firmware

Version: V2.19+)

Revision History

Issue 1 Version 1.02 3rd November 2004 Initial version
Issue 2 Version 1.05 17th February 2005
Issue 3 Version 1.10 21st July 2005
Issue 4 Version 1.12 2nd September 2005
Issue 5 Version 1.19 26th July 2006 Changes for V1.2 PCB / hardware revision

Disclaimer
Under no circumstances will iQuest (NZ) Ltd be liable or responsible for any consequential damage or loss

that may arise from the use of this product.
All examples and diagrams shown in this manual and any supplied software examples are intended as a

guide to understanding this product, not to guarantee operation. iQuest (NZ) Ltd accepts no responsibility
for use of this product based on this information or these examples.

Owing to the wide variety of possible applications of this product, you must satisfy yourself as to its suitability
to your specific application.

© 2006, iQuest (NZ) Ltd
All rights reserved.

This publication, or any part of it, and any software accompanying it may not be copied, photocopied,
reproduced, translated or communicated to any third party, or reduced to electronic medium without prior
written permission from iQuest (NZ) Ltd.

iQuest (NZ) Ltd - PO Box 15169, Hamilton, New Zealand Tel: [phone] Fax: [phone] Email: [e-mail]

1 - iRIS 220 / iRIS 320, V1.19 User Guide

Contents

1 Introduction......................................................................................................................................... 4

1.1 About this Manual ..........................................................................................................................4

1.2 Hardware (PCB) Revision.............................................................................................................. 4

1.3 Support...........................................................................................................................................4

2 Overview.............................................................................................................................................. 5

2.1 Introduction .................................................................................................................................... 5

2.2 General Characteristics – iRIS 220................................................................................................5

2.3 General Characteristics – iRIS 320................................................................................................6

2.4 Features......................................................................................................................................... 7

2.5 Typical Applications.......................................................................................................................7

2.6 Technical Specifications – iRIS 220...............................................................................................8

2.7 Technical Specifications – iRIS 320 / iRIS 320V...........................................................................9

2.8 Key Features................................................................................................................................10

2.8.1 Terminal Configuration..........................................................................................................10

2.8.2 Wireless IP Connectivity (GPRS/CDMA)..............................................................................10

2.8.3 Alternative Wireless Connectivity (CSD/SMS)......................................................................10

2.8.4 Power Management..............................................................................................................10

2.8.5 Data Logging.........................................................................................................................11

2.8.6 Logged Data Array Identification...........................................................................................12

2.8.7 Alarm Processing..................................................................................................................12

2.8.8 Real Time Clock & Calendar.................................................................................................12

2.8.9 Security..................................................................................................................................12

2.8.10 Gateway Communication....................................................................................................12

3 Installation......................................................................................................................................... 13

3.1 Removing/Replacing the Electronic Assembly - iRIS 220...........................................................13

3.2 Opening / Closing the Housing - iRIS 320 / iRIS 320V................................................................13

3.3 Removing / fitting the SIM card (GSM models only)....................................................................13

3.4 I/O Connector...............................................................................................................................14

3.4.1 Internal Battery (iRIS 320 / iRIS 320V only).......................................................................... 14

3.4.2 Internal / External 12V Battery Supply.................................................................................. 15

3.4.3 External (Charger) Power Supply .........................................................................................15

3.4.4 Analog Inputs ........................................................................................................................15

3.4.5 Digital Inputs..........................................................................................................................16

3.4.6 Digital Outputs.......................................................................................................................17

3.5 Antenna Connection.....................................................................................................................18

3.6 Mounting – iRIS 220.....................................................................................................................18

3.7 Mounting – iRIS 320 / iRIS 320V.................................................................................................19

4 Configuration....................................................................................................................................20

4.1 Terminal Connection.................................................................................................................... 20

4.2 Terminal Cfg.................................................................................................................................21

4.3 Terminal Menus ...........................................................................................................................23

4.3.1 Main Menu (Level 1)..............................................................................................................23

4.3.2 Main Menu (Level 1)..............................................................................................................24

4.3.3 Comms Cfg (Level 2) ............................................................................................................ 25

4.3.4 GPRS/CDMA-1X Cfg (Level 3)............................................................................................. 27

4.3.5 Phone List (Level 3) .............................................................................................................. 29

4.3.6 IP Acceptance Cfg (Level 4) .................................................................................................29

4.3.7 GPRS/CDMA-1X Schedule Cfg (Level 4).............................................................................30

4.3.8 Sensor Selection (Level 2)....................................................................................................31

4.3.9 Sensor Cfg (Level 3) ............................................................................................................. 32

4.3.10 Alarm Selection (Level 4)....................................................................................................35

iRIS 220 / iRIS 320, V1.19 User Guide - 2

4.3.11 Alarm Cfg (Level 5) ............................................................................................................. 35

4.3.12 Output Selection (Level 2)................................................................................................... 36

4.3.13 Output Cfg (Level 3)............................................................................................................36

4.3.14 Date/Time Cfg (Level 2)......................................................................................................38

4.3.15 Miscellaneous Menu (Level 2) ............................................................................................39

4.3.16 Voice Menu (Level 2).......................................................................................................... 40

5 Operation........................................................................................................................................... 41

5.1 LED Indicators..............................................................................................................................41

5.1.1 Status LED............................................................................................................................41

5.1.2 Diagnostic LEDs....................................................................................................................41

5.2 LCD & Keypad (iRIS 320 only) ....................................................................................................42

5.2.1 LCD Operation ......................................................................................................................42

5.2.2 Status Icons........................................................................................................................... 42

5.2.3 Keypad Buttons.....................................................................................................................42

5.2.4 Display Menu Structure.........................................................................................................43

5.2.5 Primary LCD Display Screens............................................................................................... 44

5.2.6 Sensor Related Screens....................................................................................................... 45

5.2.7 Totaliser Related Screens.....................................................................................................47

5.2.8 Comms Related Screens...................................................................................................... 48

5.3 SMS Communication...................................................................................................................51

5.4 General Hints...............................................................................................................................52

6 Sensor Connection Examples.........................................................................................................53

6.1 Connecting a Flow Meter or Rain Gauge ....................................................................................53

6.2 Connecting a 0-5V Pressure Transducer ....................................................................................54

6.3 Connecting a 2-Wire Loop-Powered 4-20mA Sensor..................................................................55

6.4 Connecting an Up/Down Water Level Instrument........................................................................56

6.5 Connecting Analogue Wind Instruments .....................................................................................57

6.6 Connecting SDI-12 Instruments. (iRIS 320 / iRIS 320V only) .....................................................58

6.7 Connecting a Vaisala WXT510 Weather Transmitter (iRIS 320 only).........................................59

7 Analogue Input Scaling....................................................................................................................60

7.1 Example: A 4-20mA Water Level Sensor....................................................................................60

8 Troubleshooting ...............................................................................................................................61

8.1 IRIS will not start when battery is first connected........................................................................61

8.2 Unable to connect to GPRS network...........................................................................................61

8.3 Unable to connect to CDMA network...........................................................................................61

8.4 iRIS will not respond to SMS requests.........................................................................................61

8.5 iRIS will not answer CSD data calls.............................................................................................61

8.6 Pulse lost when iRIS connected to other equipment...................................................................61

9 User Notes......................................................................................................................................... 62

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3 - iRIS 220 / iRIS 320, V1.19 User Guide

10 Appendix A – Radio Using the RS232 Interface..........................................................................63

11 Appendix B – Voice Annunciation (iRIS 320V)............................................................................64

12 Appendix C – SDI-12 (iRIS 320 / 320V only).................................................................................65

13 Appendix D – Legacy PCB (Rev 1.1) Details................................................................................67

13.1 I/O Connector.............................................................................................................................67

13.2 Debounce Links .........................................................................................................................67

13.3 SDI-12 Interface......................................................................................................................... 68

13.4 Diagnostic LEDs.........................................................................................................................68

13.5 Transistor Switch........................................................................................................................69

14 Appendix E – iRIS 320 Enclosure Material Spec.........................................................................70

15 Appendix F - Network Settings for iQuest APN or iQuest Global Data Network..................... 71

Tables / Figures

Table 1- Feature Summary................................................................................................................................ 7

Table 2 - Standard Sensor Sources................................................................................................................ 32

Table 3 - Internal Sensor Sources................................................................................................................... 32

Table 4 – Supplementary Logging Flag Definitions......................................................................................... 33

Table 5 – Status LED Indication Modes.......................................................................................................... 41

Figure 1 - iRIS 220............................................................................................................................................. 5

Figure 2 - iRIS 320 / iRIS 320V......................................................................................................................... 6

Figure 3 - SIM Carrier......................................................................................................................................13

Figure 4 - I/O Connector..................................................................................................................................14

Figure 5 - Analog Input Circuit.........................................................................................................................15

Figure 6 - Digital Input Circuit..........................................................................................................................16

Figure 7 - Digital Output 1 Circuit.................................................................................................................... 17

Figure 8 - Digital Output 2 Circuit.................................................................................................................... 17

Figure 9 - iRIS 220 Mounting Diagram............................................................................................................18

Figure 10 - iRIS 320 / iRIS 320V Mounting Diagram....................................................................................... 19

Figure 11 - RS232 Cable Pin Designations..................................................................................................... 20

Figure 12 – Terminal Menu Structure.............................................................................................................. 23

Figure 13 – Typical RS232 / Data Radio Cable .............................................................................................. 63

Figure 14 – Typical RS232 / Radio Modem Cable..........................................................................................63

Figure 15 – V1.1 PCB Debounce Links........................................................................................................... 67

Figure 16 - Legacy SDI-12 Interface Connections.......................................................................................... 68

Figure 17 - Transistor Switch - Module Overview ........................................................................................... 69

Figure 18 - Transistor Switch - Circuit Diagram .............................................................................................. 69

iRIS 220 / iRIS 320, V1.19 User Guide - 4

1 Introduction

1.1 About this Manual

This manual is intended as a detailed guide for iRIS 200 / iRIS 320 installation, configuration and operation.
For a brief operational overview, see the separate iRIS 220 Installation Guide or iRIS 320 Installation Guide.

This manual is also available online in Adobe Acrobat® pdf format for registered users at www.iquest.co.nz

NOTE: The term “iRIS” is used throughout this manual in all instances where the reference is
equally applicable to either the iRIS 220 or the iRIS 320. When a particular section applies to only
one of the models, the full model reference will be used.

NOTE: The term “GPRS/CDMA-1X” is used throughout this manual to refer to the wireless modem
connectivity. However, the terminal menus or LCD screens on the iRIS itself will display the correct
designation for the particular model e.g. “GPRS” or CDMA-1X”.

1.2 Hardware (PCB) Revision

As from firmware version 2.19 / software version 1.19, this manual has been completely updated to refer to
the new version PCB (V1.2). This hardware revision has the following changes over its predecessor:

• Two additional analogue inputs added.

• Dedicated 5V reference output for energising potentiometer type sensors.

• Digital Output 1 changed to a switched 12V output instead of open-drain pull-down. An external

transistor switch is not required for powering sensors.

• SDI-12 interface has been upgraded to full compliance with the SDI-12 electrical standard and to
free up the digital I/O that were required for the SDI-12 function on the older hardware.

Legacy I/O and SDI-12 details referring to the older PCB revision can be found in Appendix D – Legacy PCB
(Rev 1.1) Details.

1.3 Support

Technical support for the iRIS 220 and iRIS 320 is available by contacting:
iQuest (NZ) Ltd

P.O Box 15169
Hamilton
NEW ZEALAND

Tel: [phone]
Fax: [phone]
Email: [e-mail]

For latest information and software updates, visit the iQuest (NZ) Ltd web site at www.iquest.co.nz

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5 - iRIS 220 / iRIS 320, V1.19 User Guide

2 Overview

2.1 Introduction

The iRIS 220 and iRIS 320 (iQuest Remote Information Source) are two related products that share similar
electronic components and operate in much the same way. They have been designed as cost effective, low
power, self contained information sources for use in a wide range of data gathering and logging applications.

Both models achieve GPRS or CDMA network connectivity through the use of an integral wireless modem.
Depending on the application and target market, this modem will be one of the following:

• Dual-band 900MHz/1800MHz GSM/GPRS

• Single-band 1900MHz GSM/GPRS

• CDMA/CDMA-1X

This modem also supports the alternative GSM or CDMA connection options of CSD (Circuit Switched Data)
and SMS (Short Message Service). These options require the appropriate service to be enabled by the
wireless service provider.

The two units differ primarily in their available features and also the enclosure design. The following two
sections explain the key differences between the two models.

2.2 General Characteristics – iRIS 220

The iRIS 220 is supplied in a lightweight extruded aluminium enclosure finished in a resilient powder coating.
This enclosure provides mechanical strength and EMI shielding, and also enables easy mounting in a variety
of situations.

The iRIS 220 supports a maximum of six external sensors (1-6). Sources for these sensors may be chosen
from physical digital or analog inputs or virtual sources (via serial communication or internal calculations).
Each sensor has two associated alarms, each with separate trigger and reset levels. Each alarm also has a
duration, which is used to delay the alarm trigger for analog inputs and to determine the time over which
pulse input counters should be totalised (for rainfall etc).

Three additional sensors (7-9) are reserved for internal measurements (battery voltage, supply voltage and
logger temperature). Data from all enabled sensors are logged in a four word (8 byte) compressed format
which includes full date and time to fractions of a second.

Figure 1 - iRIS 220

iRIS 220 / iRIS 320, V1.19 User Guide - 6

2.3 General Characteristics – iRIS 320

The iRIS 320 is supplied in an environmentally sealed (IP65) enclosure constructed from a special corrosion­resistant aluminium alloy that is finished in a hard-anodised coating. This provides a very high degree of
mechanical strength and EMI shielding, and enables completely stand-alone mounting in outdoor situations.
The unit comes standard with an integral 12V gel-cell battery, membrane keypad and a 4 lines x 12
characters (plus icons) LCD.

The iRIS 320 supports a maximum of six external sensors (1-6). Sources for these sensors may be chosen
from physical digital or analog inputs or virtual sources (via serial communication or calculations). Each
sensor has two associated alarms, each with separate trigger and reset levels. Each alarm also has a
duration, which is used to delay the alarm trigger for analog inputs and to determine the time over which
pulse input counters should be totalised (rainfall etc).

Three additional sensors (7-9) are reserved for internal measurements (battery voltage, supply voltage and
temperature). Data from all enabled sensors are logged in a four word (8 byte) compressed format which
includes full date and time to fractions of a second.

The iRIS 320 supports SDI-12 communication with a range of industry standard intelligent sensors. Refer to
Appendix C – SDI-12 (iRIS 320 / 320V only) for more details on the SDI-12 interface.

A variant of the iRIS 320, designated the iRIS 320V offers voice annunciation of sensor values using the
voice bearer of the wireless service. See Appendix B – Voice Annunciation (iRIS 320V) for details on this
model.

The iRIS 320 (from PCB revision 1.2) is able to manage a serial camera, the iRIS-CAM (via a small adaptor
module). This enabled the iRIS to capture colour images which can be unloaded in the same way as logged
data. Due to resource limitations, the iRIS 320V is unable to support the iRIS-CAM in conjunction with the
voice feature.

Figure 2 - iRIS 320 / iRIS 320V

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7 - iRIS 220 / iRIS 320, V1.19 User Guide

2.4 Features

GPRS or CDMA Mode

SMS Mode

CSD Mode

Voice Annunciation Support

IRIS-CAM Camera Support

Digital inputs (pulse, frequency counter)

Analog Inputs (0-5V, 0-20mA with resistor)

Digital Control Outputs

SDI-12 Interface *

RS-232 Interface

Number of Simultaneous Logging Channels

Internal Temperature Logging

Internal Battery Logging

Supply Voltage Logging

iRIS 220
iRIS 320

iRIS 320V

  
  

   

2 4 2



2 4 2

2 4 2

 
 



9
9

9

  
  

  

Alarms per Channel (sensors 1-6)

2
2

2

*SDI-12 Interface supports up to a maximum of 6 channels with the exception of the Vaisala WXT510 option that caters for the special
case of seven parameters (see Section 6.7).

Heavy Duty Milled Case

Internal 3.6V Lithium Backup Battery

Internal 12V Rechargeable Battery

Internal Battery Charger

Direct Solar Panel Connection

IP65 Rated



       
       

  

External RF Antenna Connector

Keypad / LCD

Table 1- Feature Summary

2.5 Typical Applications

The iRIS can be used for a wide range of diverse applications, including but not limited to:

 Rainfall measurement
 Water / power / gas metering
 Remote control
 River level monitoring
 Wind measurement
 Mobile temperature monitoring
 Irrigation monitoring / control
 GPRS/CDMA-1X  RS232 serial communication gateway

iRIS 220 / iRIS 320, V1.19 User Guide - 8



2.6 Technical Specifications – iRIS 220

Dimensions: 100mm x 172mm x 40mm (3.93in x 6.77in x 1.57in)
(Excluding connectors)

Mass: 380g (13.4oz)
Power Supply: External regulated 12V dc power supply or rechargeable sealed lead-acid battery.

Charger Source - External 15-30V dc supply. Supports a directly connected solar

panel (no regulator required).

Power Consumption: Less than 3mA @ 12V in idle mode and full power save mode selected.

Actual current consumption is dependent on power management mode, wireless
modem state and I/O configuration.

Comms Interfaces: 1x RS232 DB9, 38400 bps, DTE configuration.

1x Integral dual-band (900/1800MHz) GSM/GPRS modem or
Integral single-band (1900MHz) GSM/GPRS modem or
Integral CDMA/CDMA-X modem

Digital I/O: 2 x Digital Inputs

- 30Vdc maximum input, switch to 0Vdc to activate.

- Link selectable for either mechanical (<20Hz) or electronic (<5kHz) switching.
2 x Digital Outputs

- 1 x Switched 12V out (max 300mA)

- 1 x Open-drain pull-down (max 300mA @ 30V)

Analog I/O: 4 x 12 bit uni-polar analog inputs. Range 0-5000mV. Input impedance 98kΩ.

Referenced to 0V common. Internal measurements available for monitoring are:

• Battery Voltage

• Supply Voltage

• Internal Temperature (°C or °F)

• Received Signal Strength Indication (RSSI)

Logging Memory: Non-volatile 2MB flash storage of 262,144 time/date stamped data points. Circular

buffer mode (overwrites oldest data when memory is full).
A typical site with 2 parameters logged every 15 minutes plus battery voltage logged
hourly will give 3.3 years of storage before data overwrite occurs.

Clock/Calendar: Non-volatile with integral lithium back-up battery. Leap year recognition. Accurate to

+/-20 secs month, trimmable via a configuration register.

Mounting: 4 x M4 (3/16”) mounting holes at ends of case.
Environmental: Storage Temperature: -20°C - +85°C. (-4°F - +185°F)

Operating Temperature: -10°C - +70°C. (14°F - +158°F)

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9 - iRIS 220 / iRIS 320, V1.19 User Guide

2.7 Technical Specifications – iRIS 320 / iRIS 320V

Dimensions: 117mm x 162mm x 67mm (4.60in x 6.37in x 2.64in)
(Excluding glands and mounting plate)

Mass: 1580g (3.48lb)
Power Supply: Internal 12V @ 0.8A/Hr rechargeable sealed lead acid battery. Can also connect

external regulated 12V dc power supply or rechargeable sealed lead-acid battery.

Charger Supply: External 15-30Vdc supply. Supports a directly connected solar panel (no regulator).
Power Consumption: Less than 3mA @ 12V in idle mode. Actual current consumption is dependent on

power management mode, wireless modem state and I/O configuration.

Comms Interfaces: 1x RS232 DB9, 38,400 bps, DTE configuration.

1x Integral dual-band (900/1800MHz) GSM/GPRS modem or
Integral single-band (1900MHz) GSM/GPRS modem or
Integral CDMA/CDMA-1X modem.

Digital I/O: 2 x Digital Inputs

- 30Vdc maximum input, switch to 0Vdc to activate.

- Link selectable for either mechanical (<20Hz) or electronic (<5kHz) switching.
2 x Digital Outputs

- 1 x Switched 12V out (max 300mA)

- 1 x Open-drain pull-down (max 300mA @ 30V)

Analog I/O: 4 x 12 bit uni-polar Analog inputs. Range 0-5000mV. Input impedance 98kΩ.

Referenced to 0V common. Internal measurements available for monitoring are:

• Battery Voltage

• Supply Voltage

• Internal Temperature (°C or °F)

• Received Signal Strength (RSSI)

SDI-12 Interface: SDI-12 hardware interface that fully complies with the SDI-12 electrical standard.

Software support to SDI-12 standard 1.2.

Logging Memory: Non-volatile 2MB flash storage of 262,144 time/date stamped data points. Circular

buffer mode (overwrites oldest data when memory full).
A typical site with 2 parameters logged every 15 minutes plus battery voltage logged
hourly will give 3.3 years of storage before data overwrite occurs.

Audio Memory: iRIS 320V only. Non-volatile 2MB flash storage of PCM audio files. Total

cumulative playtime 3 minutes at 11.025kHz sampling rate.

Clock/Calendar: Non-volatile with integral lithium back-up battery. Y2K compliant with leap year

recognition. Accurate to +/-20 secs month, trimmable via a configuration register.

Mounting: 4 x M4 (3/16”) blind mounting holes in rear of case. Mounting plate supplied as

standard accessory for wall or panel installation.
2 x 16mm (¾”) compression glands for power supply and I/O cabling access.
1 x 25mm (1”) compression gland for antenna / RF cable access

Front secured by three M5 Allen Key® screws. The two (left-hand) screws act as
hinge links. The third (right-hand) screw can be locked with a tamper-proof wire seal.

Environmental: Storage Temperature: -20°C - +85°C. (-4°F - +185°F)
Operating Temperature: -10°C - +70°C. (14°F - +158°F)

Enclosure sealed to IP65 with gasket and glands.

iRIS 220 / iRIS 320, V1.19 User Guide - 10

2.8 Key Features

2.8.1 Terminal Configuration

All configuration and set-up parameters are modified via a standard ASCII terminal connected to the RS232
serial interface. This means that the user can configure the device without needing specialised configuration
software installed on their computer specifically for this purpose. iQuest also supply a network based
terminal program (UDPTerminal) that allows set-up to be performed across the GPRS/CDMA-1X network via
ASCII socket A. Refer to Section 4.2 for details on the terminal setup.

2.8.2 Wireless IP Connectivity (GPRS/CDMA)

Wireless Internet Protocol connectivity is provided via an on-board modem. Through this interface it is
possible to perform configuration changes and retrieve logged data. To facilitate GPRS connectivity with the
GSM models, a suitably activated SIM card must be inserted in the device. For all models, it is also
necessary to program the unit with appropriate GPRS/CDMA-1X connection settings via a terminal
connected to the RS232 serial interface.

The iRIS communicates over a GPRS or CDMA-1X network using UDP protocol via two concurrent data
ports. Port A is used for ASCII communication and provides similar terminal functionality to that available
through the RS232 serial interface. Port B is used for proprietary System DO (binary) communication and
supports time series data retrieval and unsolicited alarm call-in to a HydroTel™ 2000 base station. This port
is also used for auto reporting of data to a suitable base station such as the iQuest Data Network
(http://data.iquest.co.nz), when the iRIS has been configured to use this mode.

2.8.3 Alternative Wireless Connectivity (CSD/SMS)

Two other wireless connection modes other than GPRS/CDMA-1X are also possible. These are CSD (Circuit
Switched Data) or SMS (Short Message Service). As with the GPRS/CDMA-1X mode described above in
Section 2.8.2, using either CSD and/or SMS requires either a SIM card with relevant services enabled by the
GSM service provider, or in the case of CDMA-1X, the appropriate services enabled by the CDMA provider.

The CSD option is achieved by establishing a dial-up modem connection across the GSM or CDMA network.
Once this link is connected, data retrieval and configuration can be performed in a similar manner to the
GPRS/CDMA-1X mode.

The SMS option works by sending a preset text message to up to two destination cellphones or SMS
receivers. This message contains the iRIS site identification and the current values of all enabled sensors.
See Section 5.3 for more information on using the SMS feature.

NOTE: No matter what the modem callback mode is set to (GPRS/CDMA-1X or CSD or SMS), the iRIS
will answer any incoming CSD calls and also respond to incoming SMS requests as long as it is not
connected using the wireless IP link. The modem callback mode setting only changes the service
that is used to notify an alarm or generate a communication test. In this case the selected service
and destination phone number is used to call a base modem (CSD) or send a text message (SMS).

2.8.4 Power Management

The iRIS supports three power management modes:

No Power Save

With power management disabled, the internal wireless modem is maintained in a powered on state
whenever a GPRS/CDMA-1X or CSD session is not currently active. While in this state, periodic signal
strength measurements are made and it is possible to interrogate the internal modem using the AT
command set via a terminal connected to the serial interface.

All on-board communication, I/O and status LED’s are permanently enabled in this mode.

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11 - iRIS 220 / iRIS 320, V1.19 User Guide

Partial Power Save

With the power management mode set to partial save, the on-board LEDs are disabled but the internal
wireless modem remains in the fully active state as with the no power save mode.

Full Power Save

When power management is set to full save mode, the internal LED’s are disabled and the internal wireless
modem remains in a powered off state until a GPRS/CDMA-1X or CSD or SMS session is activated.

NOTE: While the modem is in this state, it is not possible to obtain signal strength measurements or
interrogate the modem via the AT command set using the Modem Terminal mode.

Additional power management features that operate in all modes include:

• Deactivation of RS232 driver ic when the DSR signal is not present.

• Disabling the LCD and turning off the backlight after two minutes of no activity.

• Ability to activate a GPRS/CDMA-1X session at scheduled times of day for pre-set period.

2.8.5 Data Logging

The iRIS supports the logging of data from six virtual sensors, plus a further three internal data sources
(battery voltage, supply voltage and logger temperature). Each of the six virtual sensors can obtain
information from one of the following data sources:

• Analog Input 1

• Analog Input 2

• Analog Input 3

• Analog Input 4

• Pulse Counter attached to Digital Input 1

• Pulse Counter attached to Digital Input 2

• Simulated Pulse Counter enabled by Digital Input 1

• Simulated Pulse Counter enabled by Digital Input 2

• Frequency Counter attached to Digital Input 1

• Frequency Counter attached to Digital Input 2

• Up/down Counter attached to Digital Inputs 1 & 2

• Received Signal Strength Indication (RSSI)

• Internal Database Location (for data obtained via user script or communications link)

• High-speed Serial Instrument (Unidata format)

• SDI-12 serial channel

Each sensor can be set up to scale the raw data source into engineering units through the application of a
multiplier and offset (slope and constant). The scaled value can be logged to non-volatile memory at rates
between once per minute to once per hour or on event for pulse inputs. As all logged data is stored in

integer format, a logging multiplier is applied to the scaled value to maintain resolution. See Section

4.3.9.

It is also possible to configure a sensor to also log minimum, maximum, standard deviation or a calculated
flow rate (pulse source only) values. See the next section, Section 2.8.6 and also Section 4.3.9 for further
details on configuring these extended logging features as part of the Sensor Cfg menus.

iRIS 220 / iRIS 320, V1.19 User Guide - 12

2.8.6 Logged Data Array Identification

Each sensor’s logged data is identified by an array ID number. For the primary logged data, the ID is the
sensor number itself. For the optional supplementary data (min/max/deviation/flow), the array ID has an
offset added to the sensor number that it is derived from. These ID offsets are as follows:

Minimum: +10
Maximum: +20
Deviation: +30
Flow Rate +40

For example, Sensor 4 has been configured to log the average value, plus the maximum and standard
deviation. Three data arrays will be logged for this sensor at each logging interval with IDs of 4, 24 and 34
respectively. In HydroTel™ 2000 these relate to point identifiers of 4/0, 24/0 and 34/0.

2.8.7 Alarm Processing

Each virtual sensor can be checked for two separate alarm conditions. Each alarm has separate trigger and
reset levels, as well as an activation delay or accumulation period depending upon the data type. The alarm
on Sensor 1 can also be used to control the digital outputs. See Sections 3.4.6 and 4.3.12 for further details
on digital outputs.

2.8.8 Real Time Clock & Calendar

The iRIS has a non-volatile real time clock that can be set by the user either through a terminal (RS232 or
UDP) or remotely via proprietary System DO commands from software such as HydroTel™ 2000 or iLink.
To enable user adjustment to minimise clock drift a menu option is provided to set a compensation offset for
fine control. See Section 4.3.14.

2.8.9 Security

The iRIS 320 can be configured with a PIN code to prevent unauthorised access to restricted information
through the LCD and keypad. This is especially useful when the iRIS 320 is installed in a location where it is
accessible to the general public.

Note: This feature is not available on the iRIS 220 as it has no keypad/LCD interface.

2.8.10 Gateway Communication

The iRIS supports System DO gateway functionality between the GPRS/CDMA-1X network and the RS232
serial interface. This enables the unit to be used as a bridge between the wide area GSM/CDMA-1X
network and a localised network. It is possible to connect a datalogger that does not have wireless capability
such as the iQuest DS-4483 to the serial port of the iRIS and communicate with it via the gateway. Also, by
connecting a data radio to the unit’s serial port it is possible to communicate with several devices in a multi­drop radio network from the GPRS/CDMA-1X network.

The gateway transparently redirects System DO packets received via GPRS/CDMA-1X from address 0
back out the serial port if they are not destined for the iRIS. Conversely, packets received on the serial port
from any address and directed to address 0 will be transparently redirected onto the GPRS/CDMA-1X
network.

To enable gateway functionality it is necessary to activate the RI input on the serial port. This can
easily be achieved by connecting the RI and DTR pins of the RS232 connector together. When the iRIS
detects the presence of RI, it forces the serial port into System DO mode at 1200 baud. Refer to Appendix
A – Radio Using the RS232 Interface for further information on using the RS232 port in this mode.

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13 - iRIS 220 / iRIS 320, V1.19 User Guide

Unlock

SIM

3 Installation

3.1 Removing/Replacing the Electronic Assembly - iRIS 220

The electronic assembly is retained in the case by two end plates and held in place by the two connectors
(I/O and RS232). Follow this procedure to gain access to the printed circuit board (PCB) to change the SIM
card on GSM models (see Section 3.3) or to change the digital input links (see Section 3.4.5).

To Remove: Undo the two mounting screws at the antenna end of the case (if fitted). Unplug the I/O
connector. Unscrew the two retaining screws on the RS232 connector and remove the connector extension.
The PCB can then be carefully removed by sliding it out of the outer case.

NOTE: Once the I/O connector and RS232 connector extension have been removed, the PCB is no
longer retained. Take care to prevent the PCB falling out of the case.

To Replace: Reverse the removal procedure to reassemble the unit.

3.2 Opening / Closing the Housing - iRIS 320 / iRIS 320V

The front of the iRIS 320 enclosure is secured by three M5 machine screws with Allen Key® heads.

NOTE: The two left-hand screws act as links to the hinges and should not be fully unscrewed.

To Open: Undo the right-hand screw completely and put in a safe place. Undo the two left-hand
screws until their heads are just fully clear of the front’s face. The front should then be able to be swung
open to the left, to a maximum angle of 90°.

To Close: Check that the green gasket is fully installed in its retaining groove. Gently swing the front
closed to the right, pulling it slightly forwards if it appears to catch, before finally pressing it fully home and
then tightening the three M5 screws securely to maintain the IP65 rating of the enclosure.

Fit a new tamper-proof wire seal to the right-hand screw if required for security purposes. Slight adjustment
of the screw may be required to align the holes in the screw and enclosure to enable the seal’s wire to be
passed through.

3.3 Removing / fitting the SIM card (GSM models only)

Important! Ensure the iRIS is depowered before attempting to remove or fit the SIM card.

Using a fingernail or small screwdriver inserted into one of the two oval holes on the sliding holder, gently
lower the slide downwards to unlock it. The slide can now be swung forwards from its top end to enable the
SIM card to be inserted or removed. Reverse the procedure to close and lock the card into place.

Caution: Exercise care when inserting or removing the SIM card, as the carrier is fragile.

Nail / tool
access here

Figure 3 - SIM Carrier

iRIS 220 / iRIS 320, V1.19 User Guide - 14

3.4 I/O Connector

All I/O and power supply terminations are via 5mm (0.2”) screw terminals provided on a 16-way pluggable
connector. The older (V1.1) PCB has a 12 way connector - see Appendix D – Legacy PCB (Rev 1.1)
Details. The I/O connector is positioned on the right hand side of the iRIS 320 circuit board, directly above
the white battery connector. On the iRIS 220, the connector protrudes through the top of the case.

The function of each I/O termination is shown in the diagram below.
TOP

AI4 Analog Input #4
AI3 Analog Input #3
AI2 Analog Input #2
AI1 Analog Input #1
AGND Analog Common Ground
5VOP 5V Reference Output
DI2 Digital Input #2
DI1 Digital Input #1
DO2 Digital Output #2
DO1 Digital Output #1
SDI-12 SDI-12 Data Bus
DGND Digital Common Ground
12V+ 12Vdc Internal/External Battery Supply +
GND (-) 0Vdc Internal/External Battery Supply ­VIN+ 15-30Vdc External Power Supply (Charger Input) +
GND (-) 0Vdc External Power Supply (Charger Input) -

BOTTOM

Figure 4 - I/O Connector

3.4.1 Internal Battery (iRIS 320 / iRIS 320V only)

The iRIS 320 / iRIS 320V are supplied with an internal rechargeable 12V 0.8A/Hr sealed lead-acid battery.
Upon installation, you will need to connect this battery as it is shipped disconnected to preserve battery life. It
should also be disconnected if the unit is not going to be used for some time.

NOTE: The iRIS 220 does not have an internal battery, so ignore all references to the internal battery
for the iRIS 220 models.

For maximum flexibility, the iRIS I/O connector has two terminals provided for additional 12V power supply
flexibility. These terminals (marked 12V+ and GND) can either be used to deliver 12V from the internal
battery out to power an external sensor or other small load, or alternatively be connected to an external 12V
battery (for greater battery capacity) or a 12V d.c battery charger type power supply. See the next two
sections on using the 12V terminals and the external (charger) power supply feature.

The +12V and GND terminals of the I/O connector are effectively connected directly in parallel with
the internal 12V battery. A resettable semiconductor fuse is fitted for short-circuit protection.

However, only connect 12V lead-acid batteries or a regulated d.c power supply that is designed
for charging a 12V lead-acid battery, to these terminals.

Applying a voltage higher than 14.5V for a sustained period to these terminals will permanently
damage the internal battery and may cause an acid leak and/or an explosion.

WARNING!

iRIS 320 / iRIS 320V INTERNAL BATTERY

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15 - iRIS 220 / iRIS 320, V1.19 User Guide

3.4.2 Internal / External 12V Battery Supply

For all models there are two terminals provided on the I/O connector designated +12V and GND (or –12V on
old models). These can be used to power the unit from an external 12V battery or regulated dc supply. For
the iRIS 320 / iRIS 320V models, the internal battery is effectively connected directly to these terminals. See
Section 3.4.1 for warnings on connecting external power supplies to them.

3.4.3 External (Charger) Power Supply

Although the iRIS 320 can operate solely from its internal battery for a few days, you will typically need to
connect an external supply to the unit so that the internal battery remains in a charged state. You can
connect any external dc power source ranging from 15 – 30Vdc, including a solar panel, without requiring an
additional solar regulator.

The battery charging circuitry utilises a switch mode regulator for maximum efficiency. The external power
supply is protected against over-voltage by ultra-fast acting protection devices and a self-resetting
semiconductor fuse.

It can also be used to charge an external battery connected to the GND and 12V+ terminals. In the event
that the external battery draws excessive current, the charger will enter a current limit mode (900mA) until
such time as the battery has been recharged sufficiently to deliver the full supply voltage. The charging
profile used by the charger depends on the selected mode. See the Power Management description in
Section 4.3.1.

3.4.4 Analog Inputs

The four analogue inputs are uni-polar 0-5Vdc with 12-bit resolution. Each input presents a load impedance
of 98KΩ to the input signal.

Scaling factors should be chosen to convert from a raw value of 0-5000, which reflects the input signal range
of 0-5V (0-5000mV). When current sources such as 0-20mA or 4-20mA are used, an external sink resistor
(typically 250Ω) must be fitted between the analogue input and AGND.

NOTE: As the analogue inputs have an input impedance of 98KΩ, the actual sink impedance will be slightly
lower than the value fitted. For example, a sink resistor of 250 ohms is installed. The actual impedance will
theoretically be 249.36Ω; therefore the voltage measured by the iRIS will also be slightly lower than
expected.

AINx

51K

47K

To ADC

100nF

AGND

Figure 5 - Analog Input Circuit

iRIS 220 / iRIS 320, V1.19 User Guide - 16

DGND

4K7

1nF

47K

3.4.5 Digital Inputs

The two digital inputs are jumper selectable for either mechanical or electronic operation. In either case it is
necessary to pull the input down to 0Vdc to activate it. Inputs will handle up to 30Vdc in the off state for
parallel connection across existing equipment. Jumpers are positioned to the right hand side of the I/O
connector. The top jumper is for Digital Input #2 and the bottom jumper is for Digital Input #1.

Fit the jumper for mechanical switching at up to 100Hz. In this mode the input is normally pulled up to 12V
through a 10KΩ resistor providing a wetting current of approximately 1.6mA. A 100nF capacitor is also fitted
across the input to provide limited hardware debounce, preventing false triggering due to contact bounce.
For installations that do not have an external power source it is important that the input is not held low for a
prolonged period of time, as this will increase the current drawn from the internal battery.

Remove the appropriate jumper for electronic switching at up to 5kHz. In this mode the input is normally
pulled up to 3.6V through a 57KΩ resistance, providing a wetting current of approximately 60µA.

DINx

+12V

10K

JPx

100nF

3V6

To internal logic circuitry

Figure 6 - Digital Input Circuit

In almost all installations where an iRIS is connected in parallel with other equipment to share a
common pulse input (e.g. from a flow meter), there has not been a detrimental effect, as the iRIS
inputs present a relatively high impedance to the circuit. However, in the event that connecting an
iRIS does cause pulse failure, iQuest recommend removing the debounce selection link for the
appropriate input. This sets the input to electronic switching mode, even if the actual pulse source is
a clean contact (reed switch or similar).

The debounce jumpers are located very close to the right-hand side of the I/O connector and are
therefore not normally visible. To gain access to the jumpers, follow this procedure:

iRIS 220. Remove the electronic assembly from the case. See Section 3.1
iRIS 320 / iRIS 320V. Unplug the green I/O connector and then undo the two hinge screws

completely, so that the enclosure lid can be lifted off. See Section 3.2

IMPORTANT NOTE!

Fit or remove the jumpers(s) as required, then reverse the procedure to reassemble the unit.

Hint: If removing a jumper, simply fit it to one pin only of the connector to avoid it being lost.

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17 - iRIS 220 / iRIS 320, V1.19 User Guide

DGND

3.4.6 Digital Outputs

The two digital outputs differ in their electrical configuration, although are identical in their logical operation.
Digital Output 1 is open-drain pull-down and is capable of sinking up to 300mA at 30Vdc. An integral diode

provides transient protection. Typically this output could be used to drive a relay or lamp powered by an
auxiliary d.c supply (e.g. 12V). In this mode, the negative of the load supply must be connected to one of the
iRIS GND terminals.

WARNING: Although it may appear possible to directly control sensors by switching the sensor
negative supply lead using Output 1, this will introduce measurement errors and may possibly
damage the sensor. Always use Digital Output 2 to power sensors on a timed basis.

Digital Output 2 is a switched 12V output and is capable of sourcing up to 300mA. Typically this output will
be used to drive a sensor, relay or lamp powered by the iRIS 12V supply.

WARNING: Care should be taken to avoid the load discharging the internal and/or external 12V
battery. Ensure adequate power supply charging capacity is available to cater for the demands of
both the logger and load.

Digital outputs may be programmed to follow the state of the GPRS/CDMA-1X connection so that they will be
active when a GPRS/CDMA-1X session has been established. This mode can be used to control power to
an external data radio when using the iRIS 320 as a radio based gateway.

Alternatively, the outputs can also be programmed to follow a schedule for use in powering loads. Or they
can be selected for remote control directly from a HydroTel™ 2000 base station or operate in response to an
alarm trigger from Sensor #1 for applications such as triggering sediment samplers.

See Section 4.3.12 for details on the digital output modes.

+12V

DOUT1

Figure 7 - Digital Output 1 Circuit

Figure 8 - Digital Output 2 Circuit

iRIS 220 / iRIS 320, V1.19 User Guide - 18

150 mm

80 mm

3.5 Antenna Connection

The iRIS can be supplied with an optional ground plane independent dipole antenna.

• iRIS 220 antenna connects to a female BNC connector that protrudes through the end of the case.

• iRIS 320 / iRIS 320V antenna is fitted through a compression gland in the bottom of the case.

Internally, the antenna terminates at a female BNC connector on the circuit board.

In areas of marginal coverage, this antenna can be removed and replaced with an external high gain
antenna such as a Yagi, via appropriate low-loss high frequency coaxial cable and male BNC connector.

3.6 Mounting – iRIS 220

An outline of the iRIS 220 case is shown below. The recommended mounting screws are M4 machine
screws or Twinfast® wood screws.

Figure 9 - iRIS 220 Mounting Diagram

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19 - iRIS 220 / iRIS 320, V1.19 User Guide

3.7 Mounting – iRIS 320 / iRIS 320V

An outline of the iRIS 320 mounting plate is shown below. The recommended mounting screws are M4
machine screws or Twinfast® wood screws.

NOTE: It is very important that the three M5 Allen Key® screws on the front panel are tightened firmly
after installation to maintain the IP65 rating of the enclosure.

Figure 10 - iRIS 320 / iRIS 320V Mounting Diagram

The mounting holes are on 130mm (5.11in) width by 82mm (3.22in) height centres.

iRIS 220 / iRIS 320, V1.19 User Guide - 20

4 Configuration

The iRIS configuration is achieved through the connection of a terminal to the internal RS232 serial port.
Upon detection of a terminal connection via the DSR signal, the iRIS will output the main configuration menu
to the terminal screen. The following sections describe how to set up a terminal connection and all the menu
options available while connected.

The description assumes a computer running the Microsoft® Windows® operating system is being used and
all examples relate to the standard Windows® terminal emulator application, HyperTerminal™. However,
iQuest also supply iLink, a support utility for configuring the iQuest range of dataloggers and this includes a
terminal emulator that is similar in function to HyperTerminal®. iLink is available from the iQuest website.

4.1 Terminal Connection

The iRIS RS232 port is a DTE (Data Terminal Equipment) configured port and is identical in pinout and
signal allocation to that of an IBM compatible PC’s RS232 port. Therefore the cable required is the same as
that for computer-to-computer communication and is termed a null-modem cable. These are available from
all good electronic stores if required.

To access the iRIS configuration terminal session, connect a full null-modem cable (wired as shown below)
between a communication port (e.g. COM1) on your computer and the RS232 port of the iRIS. The null
modem cable configuration has the three main signal pairs crossed over. These pairs are TXD/RXD,
RTS/CTS and DTR/DSR. The remaining lines (SG, CD and RI) are connected straight through.

Computer iRIS

DB9F DB9F

1 CD CD 1
2 RXD TXD 3
3 TXD RXD 2
4 DTR DSR 6
5 SG SG 5
6 DSR DTR 4
7 RTS CTS 8
8 CTS RTS 7
9 RI RI 9

Figure 11 - RS232 Cable Pin Designations

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