Hubbell GAI-TRONICS SP2 User manual

Pub. 42004-794D
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 Remote Subset/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
Subsets......................................................................................................................................................3
Installation ......................................................................................................................................3
Important Safety Instructions................................................................................................................3
Enclosure Mounting and Cable Entries................................................................................................4
Open the Station......................................................................................................................................5
Field Wiring and Configuration............................................................................................................5
Station Ground......................................................................................................................................5
Termination PCBA Connections ..........................................................................................................6
Main PCBA—600-Ohm Audio I/O with Control...............................................................................11
PoE Interface PCBA...........................................................................................................................12
Settings and Adjustments..............................................................................................................13
Open the Station....................................................................................................................................13
Main PCBA Configuration ..................................................................................................................13
Write Protect (EEPROM) Jumper ......................................................................................................13
WDOG Enable (Watchdog) Jumper...................................................................................................13
Reset Switch .......................................................................................................................................13
Speaker and 600-ohm Audio Output Volume ....................................................................................14
Receiver Volume ................................................................................................................................15
Group and Station Number Selector Switches....................................................................................15
Main PCBA Indicators.........................................................................................................................15
Power LED .........................................................................................................................................15
Heartbeat LED....................................................................................................................................15
Ethernet Connection LEDs.................................................................................................................15
Five Configurable LEDs..................................................................................................................... 16
Front Cover Installation.......................................................................................................................16
Programming ................................................................................................................................16
Remote Subset Operation .............................................................................................................16

Table of Contents Pub. 42004-794D
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
Standard Handset Paging.....................................................................................................................16
Party Line Communication..................................................................................................................17
Maintenance..................................................................................................................................17
Service....................................................................................................................................................17
Parts .......................................................................................................................................................17
Troubleshooting....................................................................................................................................18
Reference Documentation ............................................................................................................18
Specifications ................................................................................................................................19
Power Consumption..............................................................................................................................19
Ethernet .................................................................................................................................................19
RTU........................................................................................................................................................19
Audio......................................................................................................................................................19
Mechanical.............................................................................................................................................20
Environmental.......................................................................................................................................21
Approvals.......................................................................................................................................21

Pub. 42004-794D
GAI-TRONICS®
A HUBBELL COMPANY
SP2 PoE Remote Subset/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 installation, operation, and maintenance manual 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. Use this information only in
connection with the operation of your GAI-Tronics product or system. Do not disclose this manual in any
form, in whole or in part, directly or indirectly, to any third party.
This product contains GAI-Tronics’ copyrighted computer programs in semiconductor memory. Do not
reproduce them in any form without express written permission from GAI-Tronics.
General Information
Product Overview
A GAI-Tronics SP2 installation is a modular industrial
multicast VoIP (Voice over Internet Protocol)
communications system. The standard PoE remote subset
SP2 configuration is an indoor handset/speaker amplifier
station using PoE power with RTU control. The SP2
remote subset handset/speaker amplifier station is for use
with a remote subset (see the Subsets section). They are
constructed of cold rolled steel with a gray or safety
orange powder coat finish. Several options add to or
modify station capabilities (see the Features and Options
sections).
SP2 stations connect to an Ethernet network so the loss of
a single station will not adversely affect the entire system.
The stations require a 100 Mbps link to a switch or router
using Category 5e or better Ethernet cable. Isolate SP2
network traffic from other network devices to ensure the
quality of SP2 audio. Properly configure network
switches and routers 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 PoE Remote Subset/Speaker
Amplifier Front Panel

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Features
•flexible and highly configurable SMART technology featuring ALS (ambient level sensing), 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.
•five configurable multicast channels for full-duplex conference communication with party line
selector switch
•eight configurable multicast channels for receiving page announcements
•one relay output
•two isolated inputs (one isolated input with optional 70 V/100 V speaker termination PCBA)
•600-ohm audio I/O with control
•configurable priority scheme allows 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 pre-announcement 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 (GAI-Tronics’ factory installs all SP2 station options.)
•speaker amplifier only (no remote subset)
•70-volt/100-volt constant voltage speaker termination PCBA
•conformal coating for PCBA
•gray powder-coat finish

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Subsets
For proper operation, install the SP2 remote subset handset/speaker amplifier station with a remote subset
configuration from the following list:
•single or multi-party desktop subset
•single or multi-party desk-edge subset
•single or multi-party flush-mount subset
Mount the SP2 remote subset within 10 feet of the amplifier enclosure due to the subset cable length. In
addition, mount the amplifier enclosure in an indoor location—the amplifier enclosure is not for outdoor
use.
Installation
Important Safety Instructions
•Read, follow, and retain instructions—Read and follow all safety and operating instructions before
installing or operating the unit. Retain instructions for future reference.
•Heed warnings—Adhere to all warnings on the unit and in the operating instructions.
•Attachments—Do not use attachments not recommended by GAI-Tronics, as they may cause
hazards.
•Servicing—Do not attempt to service this unit. Opening or removing covers may expose 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.
Install Class 2 circuit wiring in accordance with the NEC.
WARNING
—Do not disconnect equipment while energized.
Insure proper grounding to protective earthing.
Only trained, qualified, and competent personnel must install these enclosures. Installation must comply
with state and national regulations, as well as safety practices for this type of equipment.

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Enclosure Mounting and Cable Entries
Mount the enclosure to a flat surface that provides
proper clearance, rigidity, and strength to support
the enclosure and all contained devices.
NOTE: Install the enclosure within 10 feet of the
remote subset.
1. Mount the enclosure using ¼-inch (M6)
(customer supplied) hardware through the
four 0.312-inch (8 mm) diameter holes, on the
mounting flanges (see Figure 2).
• The suggested mounting height for all
station enclosures is 48 inches (1219 mm)
to the center of the bottom mounting
holes of the enclosure.
• SP2 stations are not supplied with conduit
or cable openings.
2. Remove the front panel (see the Open the
Station section).
3. Drill or punch entry openings in the rear
section of the enclosure (see Figure 2).
• The station is suitable for bottom and/or
top entry.
• Using the optional 70-volt/100-volt line
audio termination PCBA requires bottom
entry.
• Recommended: Bottom entry prevents
condensation that may form in the
conduit from dripping onto the
termination PCBA.
• There must be a minimum of ½ inch (13
mm) of material between entry holes.
NOTE: Do not use top entries with 70-volt/100-
volt speakers.
Figure 2. Suggested Wire Entry Locations

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Open the Station
1. Remove the four screws from the front panel and turn it to the left.
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 Remote Subset Station—Interior View
Field Wiring and Configuration
The remote subset PoE SP2 station provides terminal blocks on the termination PCBA, in the rear of the
enclosure, for field wiring the speaker, I/O connections, and optional 70-volt/100-volt speakers. The
main PCBA, mounted to the back of the front panel, contains the 600-ohm audio connection. The
Ethernet connection is on the PoE interface PCBA, on top of the main PCBA.
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. Install Class 2 circuit wiring
in accordance with the NEC.
Station Ground
Connect the station enclosure 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).

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Termination PCBA Connections
Figure 4. SP2 Termination PCBAs (PoE Stations)
NOTE: Installation of 70-volt/100-volt speakers requires factory installation of the 70-volt/100-volt
termination PCBA.
NOTE: Connect an ac or dc power source to terminal block TB3 only when using the RTU output.
8/16-ohm Speaker Connections 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. Install spade lugs on the wires.
3. Connect the speaker wires to terminal block TB1 (see Table 1).
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 enables connection of a second speaker branch connected in series or parallel
with the primary speaker.

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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-ohm Speaker Configuration

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70-V/100-V Speaker Connections (with line monitoring)
The optional 70-volt/100-volt speaker line-
monitoring PCBA replaces the standard
termination board and enables connection of 70-
volt and/or 100-volt speakers to the SP2 station.
Terminal block TB1 provides termination for the
station’s speaker loop(s). Wire all speakers in
parallel. Monitor one speaker loop by
terminating the return cable to the LINE SPRVN
terminals at terminal block TB2 (see Figure 6
and Table 4).
1. Pull the 70-volt and/or 100-volt speaker
cable(s) into the enclosure.
2. Install spade lugs on the wires.
3. Connect 100-volt speakers between the
100V and COM terminals on TB1. Connect
70-volt speakers between the 70V and COM
terminals onTB1.
Two sets of terminals exist for the 70-volt
and 100-volt speaker loops, providing
termination for additional speaker loops.
NOTE: The station can only monitor one
speaker loop.
4. For speaker line supervision, connect the
speaker return wires to the LINE SPRVN +
and − terminals at terminal block TB2 (see
Table 4).
5. Move jumper P2 to pins 2–3 to enable
ground fault monitoring.
6. Torque the terminal block screws to 8–10
in·lb (0.90–1.13 N·m).
NOTE: The combined wattage (tap settings) for
all speakers must never exceed 16 watts
under PoE or 30 watts under PoE plus.
Table 2. 70 V/100 V Speaker Connection TB1
Pin Label Description
TB1-1 100V 100 V Parallel Speakers—Output
TB1-2 COM Common
TB1-3 70V 70 V Parallel Speakers—Output
TB1-4 100V 100 V Parallel Speakers—Output
TB1-5 COM Common
TB1-6 70V 70 V Parallel Speakers—Output
Figure 6. 70-V/100-V Termination PCBA

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RTU Inputs
The standard termination PCBA contains two auxiliary RTU inputs. The 70V/100V termination board
provides speaker line monitoring and has one auxiliary RTU input. Terminate the input(s) to terminal
block TB2 (see Figure 4).
1. Pull the RTU input cable(s) into the enclosure.
2. Install spade lugs on the wires.
3. Connect the RTU input wires to terminal block TB2 (see Table 3 or Table 4).
4. Torque the terminal block screws to 8–10 in·lb (0.90–1.13 N·m).
5. Install end-of-line resistors (see Figure 7) to enable RTU input-cable monitoring.
Figure 7. RTU Input Wiring with Cable Monitoring
Table 3. Standard Termination PCBA
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 −
Table 4. 70V/100V Termination PCBA
Speaker Line Monitoring and RTU Input
Termination—TB2
Pin Label Function
TB2-1
+
LINE
SPRVN
70 V/100 V
Supervision +
TB2-2 − 70 V/100 V
Supervision −
TB2-3
+
RTU
INPUT
RTU Input +
TB2-4 − RTU Input −

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RTU Output
A single output relay provides two form C
contacts to switch external power to a
strobe (see Figure 8). Terminate the output
at terminal block TB2 (see Figure 4).
Connect an ac or dc source to terminal
block TB3 to provide power for the strobe.
WARNING —Line voltage is
present at the NO
contact until JU1
and JU2 are
removed.
1. Pull the RTU output and external
power source cables into the enclosure.
2. Install spade lugs on the wires.
3. Connect the RTU output wires to terminal block TB2 (see Figure 8 and Table 5).
4. Connect the external power source wires to terminal block TB3 (see Table 6 or Table 7).
5. Torque the terminal block screws to 8–10 in·lb (0.90–1.13 N·m).
For strobe cable monitoring:
6. Install a 20-kilohm 10-watt resistor across the terminals of the beacon (see Figure 8).
7. dc powered strobes only: Install a dc blocking diode in series with the dc strobe (see Figure 8).
8. Install jumpers at terminal block TB2 to enable cable monitoring (see Figure 8).
NOTE: Using an RTU input to monitor the beacon wiring makes it unavailable for other functions.
Table 5. 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 COM A Common Output A
TB2-8 COM B Common Output B
TB2-9 NO A Normally Open Output A
TB2-10 NO B Normally Open Output B
Table 6. AC Power—TB3 Table 7. DC Power—TB3
Pin Label Description Pin Label Description
TB3-1 LINE Positive TB3-1 + Positive
TB3-2 NEUTRAL Negative TB3-2 − Negative
TB3-3 ⏚ Earth ground TB3-3 No Connection
Figure 8. RTU Output Wiring—TB2

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Main PCBA—600-Ohm Audio I/O with Control
SP2 stations have a 600-ohm audio input to broadcast line level audio over the page line. The station
broadcasts the 600-ohm input audio stream upon closure of a normally open dry contact input control.
SP2 stations also provide a 600-ohm audio output for sending page line audio to a remote audio amplifier.
A solid-state dry contact relay controls when the remote 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 8 and Figure 9).
4. Connect the pluggable terminal block to terminal block receptacle TB1.
Table 8. 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
Figure 9. SP2 Main PCBA (PoE)

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PoE Interface PCBA
The PoE interface PCBA mounts to the top of the main PCBA. Terminate the Ethernet cable to terminal
block TB1 on the PoE interface PCBA (see Figure 10).
1. Pull a dedicated Category 5e or better Ethernet cable into the rear enclosure.
Maximum PoE cable length is 100 m.
2. Install ferrules onto the wire ends.
3. Connect the Ethernet cable to the 8-position pluggable terminal block (see Table 9).
4. Connect the pluggable terminal block to the PoE interface PCBA (see Figure 10).
5. Connect the other end of the Ethernet cable to an 802.af (PoE) or 802.at (PoE plus) compliant switch.
NOTE: SP2 stations require shielded Ethernet cable or metallic conduit.
Table 9. Ethernet Connection—TB1
Pin Label Description Wire Color (T-568B)
TB1-1 DC− Negative dc voltage Brown
TB1-2 DC− Negative dc voltage White/Brown
TB1-3 RXB Data Receive − Green
TB1-4 DC+ Positive dc voltage White/Blue
TB1-5 DC+ Positive dc voltage Blue
TB1-6 RXA Data Receive + White/Green
TB1-7 TXB Data Transmit − Orange
TB1-8 TXA Data Transmit + White/Orange
Figure 10. PoE Interface PCBA

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Settings and Adjustments
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 rear enclosure using two of the screws just removed (see Figure 11).
Figure 11. SP2 PoE Remote Subset Station—Interior View
Main PCBA Configuration
Refer to Figure 12 for the switch, jumper, and LED locations, on the main PCBA.
Write Protect (EEPROM) Jumper
NOTE: Do not adjust this jumper in the field.
WDOG Enable (Watchdog) Jumper
Watchdog jumper, P11, enables a watchdog feature for software purposes. Do not adjust this jumper in
the field. The default setting is shorted.
Reset Switch
Reset switch, S1, reboots the station to its initial state. All configuration settings remain programmed.

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Figure 12. Main PCBA—PoE Remote Subset SP2 Station
Speaker and 600-ohm Audio Output Volume
The speaker volume potentiometer, R36, adjusts the signal level to the speaker from the page line. When
also connecting the 600-ohm audio output, R36 adjusts the volume for both. Configure the 600-ohm
audio output volume via the CLI (Command Line Interface) when using 600-ohm audio without an
external speaker. 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 speaker volume potentiometer, R36, fully counterclockwise (see Figure 12).
The speaker emits an audible test-tone.
2. Slowly turn R36 clockwise to obtain the desired output volume.
The test-tone ceases three seconds after making no adjustments.
This setting is configurable via USB or Ethernet connection using the CLI.
NOTE: Configuring this setting with the SP2 Console in a mutually provisioned system overrides this
setting on the station. See the SP2 Configuration Guide, Pub. 42004-784 (see the Reference
Documentation section).

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Receiver Volume
Use the receiver volume potentiometer, R37 (see Figure 12),to adjust the volume for the handset:
1. Remove the handset from the cradle.
2. Turn the receiver volume potentiometer, R37, fully counterclockwise.
The receiver emits an audible test-tone.
3. Slowly turn R37clockwise to obtain the desired output volume.
The test-tone ceases three seconds after making no adjustments.
This setting is configurable via USB or Ethernet connection using the CLI.
NOTE:Configuring this setting with the SP2 Console in a mutually provisioned system overrides this
setting on the station. See the SP2 Configuration Guide, Pub. 42004-784 (see the Reference
Documentation section).
Group and Station Number Selector Switches
One group-number and two station-number hex-selector switches configure SP2 stations for mutual
provisioning (see Figure 12). Each hex switch has a small arrow that indicates 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].
NOTE:Do not assign the same group/station number to more than one station.
Configure at least one SP2 station as a master station to utilize mutual provisioning in an SP2 system.
Assign addresses [0.01], [0.02], or [0.03] to the master stations using the selector switches. Master
station(s) store the configuration for all SP2 stations on the network. Each SP2 station retrieves the
mutual provisioning configuration from the master station as it powers up. See Pub. 42004-784, SP2
Configuration Guide, for detailed information on configuring SP2 stations and SP2 system mutual
provisioning (see the Reference Documentation section).
Main PCBA Indicators
Power LED
The POWER LED illuminates when power is applied to the station, indicating the main board power
supply is operational (see Figure 12).
Heartbeat LED
The HEARTBEAT LED flashes when network communication is established, indicating the microprocessor
is operational (see Figure 12).
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 indicate an active 100 Mbps Ethernet link when off. The activity LED, ACT, blinks yellow to
indicate Ethernet data activity (see Figure 12).

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Five Configurable LEDs
Configure the five LEDs (see Figure 12) through firmware. Information for configuring these LED
indicators is in the SP2 Configuration Guide, Pub. 42004-784 (see the Reference Documentation section).
Front Cover Installation
After completing all adjustments:
1. Place the front cover onto the rear enclosure
Do not 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
GAI-Tronics’ factory configures SP2 stations to provide basic Page/Party functions upon power-up.
Reconfigure the stations for custom configurations and larger system designs using the CLI (command
line interface), SP2 Console, or E3 Console applications. Refer to Pub.42004-784 , SP2 Configuration
Guide.
Remote Subset 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 requesting conversation: rotate the party-line selector switch to select an unoccupied party line.
3. Press and hold the handset pressbar (not necessary when using the optional ALL-CALL button).
4. After hearing the short preannouncement tone (if configured), speak directly into the microphone to
broadcast the 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. If requesting conversation:
1. Designate the party line selected in Step 2.
2. Release the handset pressbar.
3. Wait for the designated individual(s) to respond.
Full-duplex communication takes place on the party line without broadcasting over the system’s
speakers.
6. Replace the handset in the cradle.

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Party Line Communication
To respond to a page:
1. Turn the party-line selector switch on any SP2 station in the system to the requested party line.
2. Pick up the station handset.
Full-duplex communication takes place on the party line without broadcasting over the system’s
speakers.
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.
The system speakers do not broadcast party line conversations. Other individuals can join the
conversation at any time by picking up a handset and rotating the party-line selector switch to the party
line in use.
Maintenance
Service
Contact a regional service center for an RA# (return authorization number) if the equipment requires
service. Ship equipment prepaid to GAI-Tronics with an RA# and a purchase order number. Repairs or a
replacement are 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
with identifying the closest regional service center.
Parts
Table 10. Replacement Parts
Part No.
Description
12508-002
Screw Kit (Qty. 32)

Pub. 42004-794D
SP2 PoE Remote Subset/Speaker Amplifier Station Page 18 of 21
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Troubleshooting
The following table provides aid for qualified service personnel when troubleshooting problems with an
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 blinking once per second for normal operation
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 IGMP snooping and multicast
filtering
remote subset handset receiver audio
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
external speaker volume 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 not functional
•verify no monitored output faults exist
•check fuse F1 on the termination PCBA
•check connected device operation
RTU input not functional
•verify no monitored input faults exist
•check RTU Inputs at terminal block TB2
•Check operation of connected device.
Reference Documentation
GAI-Tronics’ product documentation is located on the GAI-Tronics website at https://www.gai-
tronics.com.
SP2 Configuration Guide...............................................................................................................42004-784
Elemec3 Console Manual—Version 3.0........................................................................................42004-550