Hubbell GAI-TRONICS SP2 User manual

Pub. 42004-788L2A
G A I - T R O N I C S ®
A H U B B E L L C O M P A N Y
SP2 POE Handset/Speaker
Amplifier Station
TA B L E O F CO N T E N T S
GAI-TRONICS 3030 KUTZTOWN RD. READING, PA 19605 USA
610-777-1374 ◼800-492-1212 ◼Fax: [phone]
VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
Confidentiality Notice.....................................................................................................................1
General Information.......................................................................................................................1
Product Overview ...................................................................................................................................1
Features....................................................................................................................................................2
Options.....................................................................................................................................................2
Installation ......................................................................................................................................3
Important Safety Instructions................................................................................................................3
Mount the Enclosure...............................................................................................................................4
Cable Entries...........................................................................................................................................4
Open the Station......................................................................................................................................5
Field Wiring and Configuration............................................................................................................5
Station Ground......................................................................................................................................5
Termination PCBA Connections ..........................................................................................................6
Direct Speaker Connection and Jumper Settings..............................................................................6
RTU Inputs........................................................................................................................................8
RTU Output ......................................................................................................................................8
Main PCBA—600-Ohm Audio I/O with Control.................................................................................9
POE Interface PCBA ..........................................................................................................................10
Settings and Adjustments..............................................................................................................11
Open the Station....................................................................................................................................11
Main PCBA Configuration ..................................................................................................................12
Write Protect (EEPROM) Jumper.......................................................................................................12
WDOG Enable (Watchdog) Jumper ...................................................................................................12
Boot Enable Jumper............................................................................................................................12
Reset Switch........................................................................................................................................12
Speaker and 600-ohm Audio Output Volume..................................................................................... 13
Receiver Volume ................................................................................................................................13
Group and Station Number Selector Switches....................................................................................13
Main PCBA Indicators.........................................................................................................................14
Power LED..........................................................................................................................................14
Heartbeat LED....................................................................................................................................14
Ethernet Connection LEDs .................................................................................................................14
Five Configurable LEDs.....................................................................................................................14
Install the Front Cover.........................................................................................................................14

Table of Contents Pub. 42004-788L2A
GAI-TRONICS 3030 KUTZTOWN RD. READING, PA 19605 USA
610-777-1374 ◼800-492-1212 ◼Fax: [phone]
VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
Programming ................................................................................................................................14
Operation.......................................................................................................................................14
Standard Handset Paging.....................................................................................................................14
Party Line Communication..................................................................................................................15
All-Call Button Use...............................................................................................................................15
Alternate-Page Destination Switch Use...............................................................................................16
Headset Use............................................................................................................................................16
Maintenance..................................................................................................................................17
Troubleshooting....................................................................................................................................17
Service....................................................................................................................................................18
Replacement Parts................................................................................................................................18
Specifications ................................................................................................................................18
Approvals.......................................................................................................................................19

Pub. 42004-788L2A
GAI-TRONICS®
A HUBBELL COMPANY
SP2 POE Handset/Speaker Amplifier
Station
GAI-TRONICS 3030 KUTZTOWN RD. READING, PA 19605 USA
610-777-1374  800-492-1212  Fax: [phone]
VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
Confidentiality Notice
This manual is provided solely as an installation, operation, and maintenance guide and contains sensitive
business and technical information that is confidential and proprietary to GAI-Tronics. GAI-Tronics
retains all intellectual property and other rights in or to the information contained herein, and such
information may only be used in connection with the operation of your GAI-Tronics product or system.
This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any third
party.
This product contains copyrighted computer programs stored in semiconductor memory. These programs
are copyrighted by GAI-Tronics Corporation and may not be reproduced in any form without express
written permission from GAI-Tronics.
General Information
Product Overview
The GAI-Tronics SP2 POE station is part of a
modular industrial multicast VoIP (Voice over
Internet Protocol) communication system. The
standard SP2 POE configuration is an indoor, multi-
party, handset/speaker amplifier station using POE
(Power over Ethernet) with RTU control. They are
constructed of cold rolled steel with a gray or safety
orange powder-coat finish. A number of options are
available to add to or modify station capabilities (see
the Features and Options sections below).
SP2 stations connect to an Ethernet network so the
loss of a single station will not adversely affect the
rest of the system. The stations require a 100 Mbps
link to a switch or router using Category 5e or better
cable. To ensure the quality of SP2 audio, it is
recommended that SP2 network traffic be isolated
from other devices and that network switches and
routers be properly configured for IGMP (Internet
Group Management Protocol) snooping and multicast
filtering. Maximum cable runs between SP2 stations
and network switches are limited to 100 meters to
comply with Ethernet standards.
Figure 1. SP2 Station Front Panel

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 2 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
Features
•flexible and highly configurable SMART technology featuring Ambient Level Sensing (ALS), real
time self-diagnostics, and available remote monitoring
•real-time operation providing instantaneous page and party line communication
•no SIP server or conference bridge requirement
•one-way live paging and alarm annunciation over system speakers
•distributed amplifier topology—loss of an individual amplifier will not adversely affect the system as
a whole
•mutual provisioning mode allows easy system deployment
•high efficiency (>80%) Class D paging amplifier provides up to 14 watts of speaker output at 8 Ω
when powered by POE Plus, 6 watts of speaker output when powered via POE.
•five configurable multicast channels for full-duplex conference communication with party line
selector switch
•eight configurable multicast channels for receiving page announcements
•one isolated output for beacon activation
•two contact inputs
•600-ohm audio I/O with control
•configurable priority scheme to allow urgent/emergency pages to override less important pages
•configuration stored in non-volatile memory
•field adjustable volume control for handset earpiece, headset earpiece, and speaker amplifier
•configurable local and nearby speaker mutual muting to prevent acoustic feedback of live pages
•configurable preannouncement tone
•off-hook and page switch timeout functionality
•configurable virtual zoning ability
•USB interface for field or bench configuration
•durable, high-visibility safety orange powder coat finish
Options
•speaker amplifier only (no handset)
•headset with page pressbar for loud environments
•five configurable multicast channels for alternate page destinations with page line selector
•All-Call push button for secondary page destination.
•PVC or Hytrel®handset cords in 6-, 15-, or 25-foot lengths
•conformal coating for PCBA
•gray powder-coat finish

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 3 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
Installation
Important Safety Instructions
•Read, follow, and retain instructions—All safety and operating instructions should be read and
followed before operating the unit. Retain instructions for future reference.
•Heed warnings—Adhere to all warnings on the unit and in the operating instructions.
•Attachments—Attachments not recommended by the product manufacturer should not be used, as
they may cause hazards.
•Servicing—Do not attempt to service this unit by yourself. Opening or removing covers may expose
you to dangerous voltage or other hazards. Refer all servicing to qualified service personnel.
ATTENTION
—Install equipment without modification and according to all applicable local,
national, and international electrical codes. North America—Consult the
National Electrical Code (NFPA 70), Canadian Standards Association (CSA
22.1), and local codes for specific requirements regarding your installation.
Class 2 circuit wiring must be performed in accordance with NEC 725.55.
WARNING
—Do not disconnect equipment while energized.
Ensure proper grounding to protective earthing.
These enclosures must be installed by trained, qualified and competent personnel. Installation must
comply with state and national regulations, as well as safety practices for this type of equipment. The
mounting location must be flat and provide proper clearance, rigidity and strength to support the
enclosure and all contained devices.

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 4 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
Mount the Enclosure
Mount the enclosure using the four 0.312-
inch (8 mm) diameter holes located on the
mounting flanges with ¼-inch (M6)
hardware. The suggested mounting height
for all station enclosures is 48 inches
(1219 mm) to the center of the bottom
mounting holes of the enclosure. The SP2
POE station is not supplied with conduit
or cable openings.
Cable Entries
Remove the front panel and drill or punch
entry openings in the rear section of the
enclosure. The station is suitable for top
and/or bottom entry (see Figure 2);
however, bottom entry is recommended to
prevent moisture from dripping onto the
termination board. There must be a
minimum of ½ inch (13 mm) of material
between entry holes.
Figure 2. Suggested Wire Entry Locations

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 5 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
Open the Station
Complete the following steps to open the station:
1. Remove the four screws from the front panel and turn it to the left to expose the interior surfaces.
2. Keep the wiring and ribbon cables connected.
3. Mount the front panel to the back-box’s left-side mounting holes using two of the screws just
removed.
Figure 3. SP2 POE Station—Interior View
Field Wiring and Configuration
The SP2 POE Station provides terminal blocks on the termination PCBA located in the rear of the
enclosure for field wiring the speaker, input, and output connections. The main PCBA, mounted to the
back of the front panel, provides pluggable terminal blocks for the Ethernet and 600-ohm audio
connections.
NOTE: Consult the National Electrical Code (NFPA 70), Canadian Standards Association (CSA 22.1),
and local codes for the specific requirements regarding your installation. Install all equipment
without modification and according to the local and national codes. Class 2 circuit wiring must
be performed in accordance with NEC 725.55.
Station Ground
The station enclosure should be connected to earth ground:
1. Install a #6 ring lug on the ground conductor.
2. Secure it to the ground terminal located in the lower left corner at the back of the rear enclosure (see
Figure 3).

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 6 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
Termination PCBA Connections
Install all connections as indicated in the following sections:
Figure 4. SP2 Standard Termination PCBA
Direct Speaker Connection and Jumper Settings
Terminal block TB1 provides termination for the station’s 8 or 16-ohm remote speaker(s).
1. Pull the speaker cable(s) into the enclosure.
2. Connect spade lugs to the wires.
3. Install the speaker wires to terminal block TB1 in accordance with the table below.
4. Torque the terminal block screws to 8–10 in·lb (0.90–1.13 N·m).
5. Configure the speaker jumpers; P2 and P3, for the appropriate impedance for use with 8-ohm or 16-
ohm speakers (see Figure 4 and Figure 5).
A redundant set of terminals is provided for a second speaker branch that can be connected in series or
parallel with the primary speaker.

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 7 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
Table 1. Direct Speaker Connections—TB1
Pin Label Description
TB1-1 + Parallel/SPEAKER A Series—Output
TB1-2 ⏚ Earth Reference
TB1-3 − Parallel/SPEAKER A Series—Output
TB1-4 + Parallel/SPEAKER B Series—Output
TB1-5 ⏚ Earth Reference
TB1-6 − Parallel/SPEAKER B Series—Output
Figure 5. 8/16-ohhm Speaker Impedance Configuration

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 8 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
RTUInputs
The standard termination PCBA contains two unsupervised auxiliary RTU inputs. Terminate these inputs
at terminal block TB2 (see Figure 4).
1. Pull the RTU Input cable(s) into the enclosure.
2. Connect spade lugs to the wires.
3. Install the RTU Input wires to terminal block TB2 (see Table 2).
4. Torque the terminal block screws to 8–10 in·lb (0.90–1.13 N·m).
Table 2. Standard Termination Board RTU Input Termination—TB2
Pin
Label
Function
TB2-1
+
RTU 1
INPUT
RTU Input 1 +
TB2-2
−
RTU Input 1 −
TB2-3
+
RTU 2
INPUT
RTU Input 2 +
TB2-4
−
RTU Input 2 −
RTUOutput
A single output relay provides two form “C” contacts to switch external power to a beacon (see Figure 6).
Terminate the output at terminal block TB2 on the termination PCBA (see Figure 4).
1. Pull the RTU output cable into the enclosure.
2. Connect spade lugs to the wires.
3. Install the RTU output wires to terminal block TB2 (see Table 3).
4. Torque the terminal block screws to 8–10 in·lb (0.90–1.13 N·m).
Table 3. RTU Output Contacts—TB2
Pin
Label
Description
TB2-5
NC A
Normally Closed Output A
TB2-6
NC B
Normally Closed Output B
TB2-7
COMA
Common Output A
TB2-8
COMB
Common Output B
TB2-9
NO A
Normally Open Output A
TB2-10
NO B
Normally Open Output B

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 9 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
Figure 6. RTU Output Wiring—TB2
Main PCBA—600-Ohm Audio I/O with Control
SP2 stations provide a 600-ohm audio input to facilitate broadcasting line level audio over the page line.
A control input exists that requires a normally open dry contact closure to enable the station to broadcast
the 600-ohm input audio. SP2 stations also provide a 600-ohm audio output for sending page line audio
to a remote audio amplifier. A solid-state dry contact output is provided that can be used to control when
the remote audio amplifier plays the audio.
1. Pull the cable for the 600-ohm audio I/O into the enclosure.
2. Install ferrules onto the wire ends.
3. Connect the 600-ohm audio wires to the pluggable terminal block for the 600-ohm audio I/O
connection (see Table 4 and Figure 7).
4. Connect the pluggable terminal block to terminal block receptacle TB1.
Table 4. 600-Ohm Audio I/O Interface Connections—TB1
Pin Label Description
TB1-1 IN CT1+ Input Control Positive
TB1-2 IN CT1− Input Control Negative
TB1-3 IN AUD+ Input Audio Positive
TB1-4 IN AUD− Input Audio Negative
TB1-5 OUT AUD+ Output Audio Positive
TB1-6 OUT AUD− Output Audio Negative
TB1-7 OUT CT1+ Output Control Positive
TB1-8 OUT CT1− Output Control Negative

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 10 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
Figure 7. SP2 Main PCBA (POE)
POE Interface PCBA
Terminate the Ethernet cable to terminal block TB1 on the POE Interface PCBA (see Figure 8). The POE
interface PCBA is mounted on top of the main PCBA:
1. Pull a dedicated category-5e or better Ethernet cable into the rear enclosure.
2. Install ferrules onto the wire ends.
3. Connect the Ethernet cable to the 8-position pluggable terminal block (see Table 5).
4. Connect the pluggable terminal block to the POE interface PCBA (see Figure 7).
5. Connect the other end of the Ethernet cable to an 802.af (POE) or 802.a+ (POE Plus) compliant
switch.
NOTE: Shielded Ethernet cable or metallic conduit is required for installation.
Figure 8. POE Interface PCBA

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 11 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
Table 5. Ethernet Connection—TB1
Pin Label Description
TB1-1 DC− Negative dc voltage
TB1-2 DC− Negative dc voltage
TB1-3 RX− Data Receive −
TB1-4 DC+ Positive dc voltage
TB1-5 DC+ Positive dc voltage
TB1-6 RX+ Data Receive +
TB1-7 TX− Data Transmit −
TB1-8 TX+ Data Transmit +
Settings and Adjustments
Open the Station
Complete the following steps to open the station:
1. Remove the four screws from the front panel and turn it to the left to expose the interior surfaces.
2. Keep the wiring and ribbon cables connected.
3. Mount the front panel to the backbox’s left-side mounting holes using the front cover screws.
Figure 9. SP2 POE Station—Interior View

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 12 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
Main PCBA Configuration
Refer to Figure 10 for the switch, jumper, and LED locations on the Main PCBA.
Figure 10. Main PCBA (Front and Rear Views)
Write Protect (EEPROM) Jumper
NOTE: This jumper should not be changed in the field.
WDOG Enable (Watchdog) Jumper
Watchdog jumper, P11, enables a watchdog feature for software purposes and should not be adjusted in
the field. The default setting is installed.
Boot Enable Jumper
Jumper P8 – BOOT, is required for development purposes and should not be adjusted in the field. The
default setting for this jumper is open.
Reset Switch
Reset switch, S1 reboots the station to its initial state. All configuration settings remain programmed.

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 13 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
Speaker and 600-ohm Audio Output Volume
The speaker volume potentiometer, R36, adjusts the signal level to the speaker from the page line. When
600-ohm audio is also connected, R36 will adjust the volume for both. The volume for the 600-ohm
audio must be configured via the CLI (Command Line Interface) when only the 600-ohm audio output is
utilized. The default setting is 4 watts from an 8-ohm speaker and 2 watts from a 16-ohm speaker.
WARNING
—Maximum output power may exceed rated speaker wattage resulting in speaker
damage.
To adjust the speaker or speaker and 600-ohm output volume:
1. Turn the SPKR speaker volume potentiometer R36 fully counter-clockwise. An audible test-tone
will be heard from the speaker.
2. Slowly turn R36 clockwise until the desired output volume is reached. The test-tone ceases three
seconds after no adjustment has been made.
This setting can also be configured via USB or Ethernet connection using the CLI.
NOTE: This setting is overridden if it is configured for the station using the SP2 Console in a mutually
provisioned system. See the SP2 Configuration Guide, Pub. 42004-784.
Receiver Volume
The Receiver Volume is adjusted using the RCVR potentiometer R37. To adjust the volume for the
handset:
1. Remove the handset from the cradle.
2. Turn the RCVR potentiometer R37 fully counter clockwise. An audible test-tone will be heard in the
handset.
3. Slowly turn R36 clockwise until the desired output volume is reached. The test-tone ceases three
seconds after no adjustment has been made.
This setting can also be configured via USB or Ethernet connection using the CLI.
NOTE: This setting will be overridden if it is configured for the station using the SP2 Console in a
mutually provisioned system. See the SP2 Configuration Guide, Pub. 42004-784.
Group and Station Number Selector Switches
One Group-Number and two Station-Number hex-selector switches are used to configure SP2 stations for
Mutual Provisioning (see Figure 10). Each hex switch has a small arrow to indicate the current setting.
1. Adjust the position of the Group-Number selector switch to the desired group [0-F].
2. Adjust the two Station-Number switches to assign the station number [00–FF]. No two stations can
be assigned the same address.
At least one SP2 station must be configured as a Master Station to utilize Mutual Provisioning in an SP2
system. Master stations must be assigned addresses [0.01], [0.02], or [0.03] using the selector switches.
Master station(s) store the configuration of all SP2 stations on the network. As SP2 stations are powered
on, they retrieve the mutual provisioning configuration from the master station. See Pub. 42004-784, SP2
Configuration Guide, for detailed information on configuring SP2 stations and SP2 system mutual
provisioning. GAI-Tronics’ product documentation is located on the GAI-Tronics website at
https://www.gai-tronics.com.

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 14 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
Main PCBA Indicators
Power LED
The Power LED located on the Main PCBA illuminates when power is applied to the station indicating
the main board power supply is operational (see Figure 10).
Heartbeat LED
The Heartbeat LED located on the Main PCBA flashes after the microprocessor is operational (see Figure
10). It flashes once per second to indicate normal operation and 250 ms on/off when a fault is detected in
the station.
Ethernet Connection LEDs
Three Ethernet connection LEDs are located on the Main PCBA; Link (LNK), Link Speed (SPD), and
Activity (ACT). The LNK LED is blue, the SPD LED is green, and the ACT LED is yellow. The LNK and
SPD LEDs must be off to indicate that a 100 Mbps Ethernet link is active. The activity LED; ACT, will
blink yellow to indicate Ethernet data activity (see Figure 10).
Five Configurable LEDs
Five LEDs are located on the Main PCBA (see Figure 10). These LEDs are configured through firmware.
Information for configuring these LED indicators is provided in the SP2 Configuration Guide, Pub.
42004-784. GAI-Tronics’ product documentation is located on the GAI-Tronics website at
https://www.gai-tronics.com.
Install the Front Cover
After all adjustments have been completed:
1. Place the front cover onto the rear enclosure.
Do not to pinch any cables.
2. Secure the front cover using the four screws and washers provided.
3. Torque the screws to 50 in·lb (5.65 Nm).
Programming
SP2 stations are factory configured to provide basic Page/Party®functions upon power-up. For custom
configurations and larger system designs the stations may need to be reconfigured. Refer to Publication
42004-784, SP2 Configuration Guide, located on the GAI-Tronics website at https://www.gai-
tronics.com.
Operation
Standard Handset Paging
Complete the following steps to make a page announcement from an SP2 handset station:
1. Lift the handset from the cradle.
2. If party line conversation is desired, rotate the selector switch to an unoccupied party line.
3. Press and hold the handset pressbar (not necessary when using the optional ALL-CALL button).

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 15 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
4. After the short preannouncement tone is heard (if configured), speak directly into the microphone to
broadcast your page announcement.
NOTE: SP2 stations incorporate a noise-canceling microphone to reduce transmitted ambient noise.
This requires the user to place the microphone as close as possible to their mouth.
5. Release the handset pressbar and wait for a response on the party line (if requested) or replace the
handset in the cradle.
Party Line Communication
To respond to a page:
1. Turn the selector switch on any SP2 station in the system to the requested party line.
2. Pick up the station handset and party line communication can occur.
NOTE: SP2 stations incorporate a noise-canceling microphone to reduce transmitted ambient noise.
This requires the user to place the microphone as close as possible to their mouth.
3. Return the handset to the cradle following the party line conversation.
Party line conversations are not broadcast over the system speakers. Other individuals can join the
conversation at any time by picking up a handset rotating the selector switch to the party line in use.
All-Call Button Use
Use the ALL-CALL option button to page an
alternate destination that has been programmed
for the station (see Figure 11). The ALL-CALL
option must be software configured for the SP2
station. To initiate a page using the ALL-CALL
feature:
1. Lift the handset from the cradle.
2. If party line conversation is desired, rotate
the selector switch to an unoccupied party
line.
3. Press and hold the ALL-CALL button.
The ALL-CALL button eliminates the need
to press the handset or headset (if equipped)
pressbar.
4. After the short preannouncement tone is
heard (if configured), speak directly into
the microphone to broadcast your page
announcement.
NOTE: SP2 stations incorporate a noise-
canceling microphone to reduce
transmitted ambient noise. This
requires the user to place the
microphone as close as possible to
their mouth.
5. Release the ALL-CALL button and wait for a
response on the party line (if requested).
6. Return the handset to the cradle when finished.
Figure 11. All-Call Button Location

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 16 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
Alternate-Page Destination Switch Use
Use the ALT-PAGE option selector switch to page
one of five alternate destinations that have been
programed for the station (see Figure 12).
Alternate page destinations must be software
configured for the SP2 station. To initiate a page
using the Alt-Page selector switch:
1. Lift the handset from the cradle.
2. If party line conversation is desired, rotate the
selector switch to an unoccupied party line.
3. Select the desired page destination using the
ALT-PAGE selector switch.
4. Press and hold the handset pressbar.
5. After the short preannouncement tone is
heard (if configured), speak directly into the
microphone to broadcast your page
announcement.
NOTE: SP2 stations incorporate a noise-
canceling microphone to reduce
transmitted ambient noise. This
requires the user to place the
microphone as close as possible to
their mouth.
6. Release the handset pressbar.
7. Return the handset to the cradle or wait for a
response on the party line (if requested).
Headset Use
Initiate a call with the optional headset feature as follows:
1. Attach the headset assembly to the auxiliary jack on the station (see Figure 11 or Figure 12).
2. If party line conversation is desired, rotate the selector switch to an unoccupied party line.
3. Rotate the ALT-PAGE selector switch (if available) or press the ALL-CALL button (if available) to
select the desired optional destination for the page announcement.
4. Press and hold the headset pressbar (not necessary when using the optional ALL-CALL button).
5. After the short preannouncement tone is heard (if configured), speak directly into the microphone to
broadcast your page announcement.
6. Release the headset pressbar.
7. Wait for a response on the party line (if requested).
NOTE: For stations with an auxiliary jack, the Model 10401-201 Headset and 10416-103 Extension Cord
allow the user to be hands-free and mobile while maintaining communication. When connected,
the handset microphone is disabled.
Figure 12. Alternate-Page Switch Location

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 17 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
Maintenance
Troubleshooting
The following table is provided to aid qualified service personnel in troubleshooting problems with the
SP2 Station.
Problem
Solution
station not functional
•check wiring and cable terminations
•check the POE settings on the Ethernet switch
•power LED on Main PCBA illuminated
•heartbeat LED blinks once per second for normal operation
•heartbeat LED blinks 250 ms on/off when a fault is detected
network communication not
functional
•verify LNK LED on main PCBA is off
•verify SPD LED on main PCBA is off
•verify IP connection settings using telnet
•ping station IP address from an admin PC
•verify network switch settings for Internet Group Management
Protocol (IGMP) snooping and multicast filtering
handset receiver audio is too
high/low
•adjust the Receiver Volume
•check potentiometer R37 setting
•check handset connections
•check cable terminations between the Termination and Main
PCBAs
•check hookswitch operation
•replace handset
speaker volume is too
high/low
•adjust the Speaker and 600-ohm Audio Output Volume
•check potentiometer R36 setting
•P2 and P3 Termination PCBA jumper positions incorrect (see
Figure 5)
•check speaker wiring configuration on TB1
•replace the speaker or driver
RTU output is not functional
•verify no output faults exist
•check connected device operation
RTU input does not function
•verify no input faults exist
•check operation of connected device

Pub. 42004-788L2A
SP2 POE Handset/Speaker Amplifier Station Page 18 of 19
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-788L2A.docx
08/19
Service
Contact a regional service center for a return authorization number (RA#) if the equipment requires
service. Equipment must be shipped prepaid to GAI-Tronics with a return authorization number and a
purchase order number. Repairs or a replacement will be made in accordance with GAI-Tronics’
warranty policy if the equipment is under warranty. Please include a written explanation of all defects to
assist our technicians in their troubleshooting efforts. Call 800-492-1212 inside the USA or 610-777-
1374 outside the USA for help identifying the Regional Service Center closest to you.
Replacement Parts
Part No.
Description
12508-002
Screw Kit (Qty. 32)
Specifications
Power Consumption
POE, IEEE 802.23af Class 0...........................................................................4 W/12.95 W (idle/maximum)
POE Plus, IEEE 802.3a+ Class 4......................................................................4 W/25.5 W (idle/maximum)
Ethernet
Cable............................................................................................................................. Category 5e or better
Speed...............................................................................................................................................100 Mbps
Maximum Stations..................................................................................................................................4096
RTU
Output Control
Maximum load current...........................................................................................................8 A OUTPUT 1
Maximum in-rush current....................................................................................................................... 15 A
Maximum voltage.............................................................................................................................250 V ac
Input Control
Switch type.................................................................................................................NO or NC dry contacts
Cable resistance .......................................................................................... 100 Ωmaximum loop resistance
Contact closure resistance......................................................................................................1 kΩ maximum
Audio
Handset
Microphone............................................................................................................ dynamic, noise-canceling
Receiver......................................................................................................dynamic, hearing aid compatible
Cord .............................................................................................................retractile, 6-foot extended, PVC
Material................................................................................................................................................... ABS
Handset Amplifier
Frequency response............................................................................ 250–3,000 Hz, +0/–3 dB ref. to 1 kHz
Distortion.....................................................................................................................<1.5% THD @ 1 kHz
Receiver level...............................................................................200 mV nominal, adjustable 100–350 mV
Headset Earpiece
Level ..............................................................................................125 mV nominal, adjustable 50–200 mV