HME System 2500E User manual

Operating Instructions
System 2500E
Wireless Drive-Thru
Audio System
SYS2500E-64 6/21/99
HME# 400421 Rev -

Table of Contents
List of Figures
Figure Title Page
1Base station ............................................................................................................ 1
2Communicator ........................................................................................................ 1
3Battery charger....................................................................................................... 1
4Base station features.............................................................................................. 2
5Communicator features.......................................................................................... 3
6Slide battery release cover to open battery compartment.................................... 4
7Install battery in Communicator battery compartment .......................................... 5
8Battery charger features......................................................................................... 5
9Plug headset cable connector into receptacle on Communicator ....................... 6
10 Fasten clips to your clothing behind your back..................................................... 6
11 Latching feature switch inside Communicator battery compartment ................... 7
12 System 2500E Base Station Circuit Boards......................................................... 11
The HME logo and the word COMMUNICATOR®are registered trademarks of HM Electronics, Inc.
© Copyright HM Electronics, Inc. - June 1999
I. GENERAL ........................................................................................................................ 1
II. EQUIPMENT IDENTIFICATION....................................................................................... 1
A. Main Components .................................................................................................. 1
B. Controls, Switches, Connectors and Lights........................................................... 2
III. BATTERYCHARGING...................................................................................................... 4
A. When to Charge the Batteries ................................................................................ 4
B. How to Remove and Install Batteries ..................................................................... 4
C. How to Charge the Batteries .................................................................................. 5
IV. WEARING THE COMMUNICATOR®
.....................................................................................................................................
6
V. OPERATION .................................................................................................................... 7
A. Full-Duplex Operation ............................................................................................ 7
B. Half-Duplex Operation ........................................................................................... 7
VI. CLEANING AND CARING FOR THE EQUIPMENT ........................................................ 8
VII. IN CASE OF PROBLEMS................................................................................................. 9
VIII. SYSTEM 2500E SPECIFICATIONS ............................................................................... 12
IX. OPTIONAL EQUIPMENT ............................................................................................... 13
X.FCC NOTICE ................................................................................................................. 13

1
SECTION 1. SYSTEM DESCRIPTION
I. GENERAL
The System 2500E is a wireless audio system primarily for use at drive-thru,
quick-service restaurants.
II. EQUIPMENT IDENTIFICATION
A. Main Components
!Base station
!COMMUNICATOR®
(plus one spare battery)
!Battery charger
Figure 1. Base Station
Figure 2. Communicator
Figure 3. Battery Charger

2
B. Controls, Switches, Connectors and Lights
1. Base Station
Front System indicator lights
!POWER light is on when the base station has power.
!“A” light is on during channel-A transmission.
!“B” light is on during channel-B transmission.
!VEHICLE light is on when a vehicle is present in the
drive-thru lane or when system is in vehicle-detect
override.
Bottom !VEHICLE DETECTOR button; to override a vehicle
detector,push and leave IN; to reset vehicle detector,
push IN and leave IN for 5 seconds, then push again
and leave OUT for normal vehicle detection.
Left Side !WIRED/WIRELESS button; must be OUT when using
the wireless System 2500E, IN when using a wired
backup system.
Figure 4. Base station features

3
Figure 5. Communicator features
2. COMMUNICATOR®
Top !! Button “A” is used to communicate with the customer.
!Button “B” is used to communicate with other personnel
wearing Communicators.
!ON/POWER light indicates the Communicator is on and
receiving power from the battery. On standard Com-
municators, this light is red. On latching Communica-
tors, this light is yellow.
!OFF/VOLUME control is for turning the Communicator on
and off, and adjusting the volume level.
!Headset connector is for connecting the headset cable to
the Communicator belt-pac.
!Headset connector support bracket is a strain relief to
reduce the possibility of damage to the receptacle from
twisting on the headset cable connector.
Bottom
!! Battery compartment cover holds batteries in the Com-
municator. (To see the battery compartment cover, the
Communicator must be removed from its belt-pac pouch.)
3. Battery Charger (See Figure 8 on page 5.)
Top !! Red lights indicate batteries above the lights are charging.
!! Green lights indicate batteries above the lights are fully
charged.
!Headset checker is used to check headsets for normal
operation. Plug the headset cable connector into the head-
set connector receptacle and speak into headset micro-
phone. If the headset is operating normally, you will hear
your own voice in the earpiece. If the headset is defective,
you will hear nothing.
Back !! AC adapter connector is for connecting AC adapter cable
to battery charger.

4
III. BATTERY CHARGING
A. When to Charge the Batteries
1. New Batteries
It is recommended that new batteries be placed in the battery charger
to be certain they are fully charged before they are used. Follow the
instructions inside the lid of the battery charger case.
2. Weak Batteries
When a fully charged battery is placed in the COMMUNICATOR®and
the power is turned on, the ON/POWER light on top of the Communica-
tor will come on. This light only indicates the power is on; it does not
indicate how much power is left in the battery. As a battery weakens
during routine use, the voice you hear in the headset or speaker will
fade or completely disappear, indicating the battery needs to be re-
charged. When this happens, remove the battery from the Communi-
cator and replace it with a fully charged battery.
NOTE:Do not charge a battery until it begins to weaken, or you will
shorten its life and lessen its ability to hold a charge.
B. How to Remove and Install Batteries
1. Removal
CAUTION: Turn the Commujnicator OFF!
To prevent damage to the Communicator, be certain the
OFF/VOLUME control is in the OFF position, completely
counterclockwise, before removing or installing batteries.
To remove the battery, release the strap
which holds the Communicator in its
pouch by squeezing together the catches
on either side of the buckle, and lift the
Communicator out of its pouch. Press
down with your thumb on the battery
cover release grid on the bottom of the
Communicator, sliding back to release
the cover from the battery compartment.
Invert the Communicator to empty the
battery into your hand.
Figure 6.
Slide battery release cover to
open battery compartment

5
2. Installation
Installation of the battery is simply the
opposite of its removal. Insert the
battery into the battery compartment
with the arrow pointing toward the
opening. Hold the battery in, and
slide the compartment cover into the
grooves on either side of the compart-
ment opening until its catch clicks
securely in place.
C. How to Charge the Batteries
Be sure your battery charger is set up in a low-traffic area, away from dust
and splashing water or grease. The AC adapter cord must be plugged into
the connector on the back of the battery charger case, and the adaptor must
be plugged into an electrical outlet. You may place up to six batteries in the
chartger at a time. As each battery is placed in the charger, the red
CHARGING light on the panel in front of the battery will light, indicating the
battery is charging. See Figure 8. When a battery is fully charged, the green
READY light on the panel in front of it will light. Batteries take approximately
10 hours to fully charge.
CAUTION: Do not remove batteries from the battery charger until the green
READY light is lit, or the charger will restart thecharge cycle.
Figure 7.
Install battery in Communicator
battery compartment
Figure 8. Battery charger features

6
IV.WEARING THE COMMUNICATOR®
With the Communicator in its pouch and
the strap buckled over it, locate the head-
set receptacle on its top corner. Align the
key and pins of the headset connector with
the receptacle, and plug the connector
into the receptacle as shown in Figure 9.
NOTE: Do not wiggle or twist the headset
connector when installing or removing it.
Put the Communicator belt-pac around your waist, with the Communicator in front of
either hip, so the OFF/VOLUME control and ON/POWER light are toward the front.
Fasten the belt tightly enough so it will not move around on your waist.
Place the headset on your head with the earphone on your ear and the cord behind
your shoulder. Fasten the cord clips to your clothing, behind your back. Adjust
the headset band until it fits comfortably and securely. Position the microphone
approximately two inches in front of your mouth. See Figure 10.
Figure 9.
Plug headset cable connector
into receptacle on Communicator
Figure 10.
Fasten clips to your clothing
behind your back

7
V.OPERATION
In single or dual drive-thru operations, COMMUNICATOR®button “A” is for com-
munication with the customer, and button “B” is for communication with other crew
members wearing Communicators.
A. Full-Duplex Operation
B. Half-Duplex Operation
NOTE:If you have a COM2000L
Latching Communicator, and you are
operating in the half-duplex mode,
you must disable the latching feature
by moving the small switch inside the
battery compartment to the minus (-)
position. To enable the latching fea-
ture, move the switch back to the
plus (+) position
ACTION RESULT
If you are using the Communicator latching
feature: Press and release button "A” to latch
communication channel open for speaking and
listening to customer. The channel will unlatch,
ending communication with the customer, if;
1. you press and release button "A” again, or
2. you press button "B,” or
3. the customer drives away
If you are not using the Communicator
latching feature: Press and hold button “A”
while speaking and listening to customer.
Release when transaction is completed.
Customer hears your voice and you hear
customer’s voice (two-way conversation).
Everyone wearing a Communicator will hear
the conversation.
While customer is speaking, turn the volume
knob to the desired level. Volume increases/ decreases. Customer’s voice becomes louder or softer.
Press and hold button "B” to speak to other
crew members wearing Communicators.
Release to listen.
Other personnel wearing Communicators hear
your voice in their headsets.
ACTION RESULT
Press and hold button "A” while speaking to
customer. Customer and everyone wearing a Communicator hear your voice.
Release button “A” and listen to customer. Customer’s voice is heard in headsets of
everyone wearing Communicators.
While customer is speaking, turn the volume
knob to the desired level. Volume increases or decreases. Customer’s voice becomes louder or softer.
Press and hold button "B” to speak to other
crew members wearing Communicators.
Release to listen.
Other personnel wearing Communicators hear
your voice in their headsets.
Figure 11.
Latching feature switch inside
Communicator battery compartment

8
VI. CLEANING AND CARING FOR THE EQUIPMENT
A. How to Clean the Equipment
The following cleaning procedure is recommended at least once each month.
1. The COMMUNICATOR®
!Remove the Communicator from the pouch.
!Remove the battery from the Communicator.
!Wash the belt and pouch in a washing machine with normal laundry
detergent. Dry them in a dryer or hang them to drip dry.
!Clean the Communicator with a damp sponge. First wet the
sponge and wring it out so it is damp, but not dripping wet. Spray
household cleaner on the sponge (NOT ON THE EQUIPMENT).
Clean the Communicator with the sponge and dry it thoroughly.
!Clean the metal battery contacts on the battery and on the Commu-
nicator with alcohol on a cotton swab. Wet the tip of the swab with
alcohol and squeeze the excess alcohol from it. Wipe each contact
with the swab, and be certain all the contacts are dry before rein-
stalling the batteries.
!Place the battery back into the Communicator, and place the Com-
municator back into the pouch, fastening the strap securely over it.
2. The Headset
!Clean the headset and cable with a damp sponge that has been
sprayed with household cleaner. The foam muff on the headset
earpiece is easily removed and replaced for sanitary purposes.
To order extra foam muffs, call your local HME sales representative.
B. How to Care for the Headset Cable and Connector
ALWAYS NEVER
align key and connector pins with key and
holes in receptacle when plugging
headset into Communicator
twist headset connector into Communicator
receptacle
clip cable to clothing with clothing clips allow cable to hang freely
grasp connector to plug in or unplug
headset grasp and pull cable to unplug headset
use both hands to remove headset from
your head remove headset with only one hand
use both hands to adjust microphone
position adjust microphone position with one hand
handle the headset cable with care pull, twist, bend or knot the headset cable
carry and hang the headset by its metal
headband carry or hang the headset by its cable

9
VII. IN CASE OF PROBLEMS
In case of any problems with your System 2500E, refer to the following troublesho-
oting checklist and the circuit board illustration on page 11. If you cannot correct
any problems using the checklist, call HME Customer Support at 1-800-848-4468.
* For assistance, call HME at 1-800-848-4468, or Fax [phone].
PROBLEM PROBABLE CAUSE SOLUTION
No sound in headset
when you press
COMMUNICATOR®
button “A” and speak
into headset
microphone.
Power is off at base station. Check circuit breaker for building.
Power supply in base station is not
working. Check power indicator light on base station. If it is not lit, be
certain AC power adapter is
plugged into AC electrical outlet,
and is connected to J2 connector
on audio circuit board in base
station.
Communicator not turned on. Turn Communicator on by turning
OFF/VOLUME control clockwise.
Volume not set correctly. Turn OFF/VOLUME control
clockwise.
Headset connector not plugged
firmly into Communicator. Plug headset connector firmly into Communicator receptacle.
Headset defective. Replace with another headset.
Low or dead battery. Check ON/POWER light. If not lit,
replace battery.
Communicator failed. Use another Communicator.
Call HME. *
Base station frequency does not
match Communicator frequency. Be certain base station S1 frequency settings match
Communicator frequency settings.
Call HME. *
Incorrect subaudible tones. Be certain base station S4 settings
match Communicator tone settings.
Call HME. *
Communicator channel
“A” or “B” functions not
working.
Communicator not turned ON. Turn on Communicator being used.
Dead or weak battery in one
Communicator. Replace battery.
One Communicator failed.
Channel A or B light does not light
when Communicator button A or B
is pressed.
Use another Communicator.
Call HME. *
Incorrect subaudible tones. Be certain base station S4 settings
match Communicator tone settings.
Call HME. *
Outbound sound too
low. Outbound volume set too low for environment. Turn outside speaker level adjustment clockwise with small
screwdriver until level is
satisfactory.
No outbound sound;
customer cannot hear
anything.
Loose speaker wires on base
station circuit board. Check speaker wire connections in base station.
Defective speaker. Call HME. *

10
* For assistance, call HME at 1-800-848-4468, or Fax [phone].
PROBLEM PROBABLE CAUSE SOLUTION
Inbound audio too
noisy. ClearSound is not active. Activate ClearSound by moving the S4, position 8 switch to the ON
position. Call HME. *
Personnel hear static
only in headsets. Transmitter antenna connection on base station is loose. Tighten transmitter antenna connection.
No power to base station. Be certain power supply is
properly plugged into electrical
outlet, and cable is properly
connected to J2 on audio circuit
board in base station.
Circuit board defective. Call HME. *
Personnel hear
customer in headsets or
ceiling speaker, but
cannot hear each other.
Receiver antenna connection on
base station is loose. Tighten receiver antenna connection.
Status lights are not lit. Circuit
board is defective. Call HME. *
Defective COMMUNICATORdor
headset. Call HME. *
No tone or sound in
headset or ceiling
speaker when vehicle
approaches speaker
post.
Power interruption has caused
vehicle detection circuit to be out
of balance.
When no vehicle is at speaker,
press RESET switch on base
station.
Vehicle detector failed or
connector may be loose. Place vehicle detector override switch in OVERRIDE position. This
will cause audio loop to remain
open for communication with
customer. Check connectors on
base station. If loose, reconnect
and return override switch to
NORMAL. Call HME. *
Incorrect S6 switch position. Be certain S6, positions 4 and 8
switches are in the ON position.
Personnel cannot hear
outside customers in
headset or ceiling
speaker.
Loose wires on audio circuit board
in base station. Be certain red, black and shield wires in base station are securely
connected.
Outside speaker or audio circuit
board has failed. Call HME. *
Communicator has
intermittent sound. Low battery. Replace battery.
Defective Communicator. Try another Communicator.
Defective headset cable. Check headset with headset
checker on battery charger. If
headset is defective, use another
headset. Call HME. *
Battery charger not
working. Charger not plugged in. Plug in battery charger. If still not working, call HME. *
Feedback heard in
Communicator headset Green and white wires of second audio cable reversed. Reverse wires
Outside speaker volume (outgoing)
control turned too high. Turn volume control counterclockwise.

11
System 2500E Base Station Circuit Boards
Figure 12.
A -Transmitter antenna
B -Receiver antenna
C -Transceiver frequency settings switch - S1
D -Vehicle detector override switch - S7
E -Channel “A” light - DS4
F -Channel “B” light - DS5
G -Vehicle present light - DS6
H -Configuration switch - S4
I -Configuration switch - S8
J -Configuration switch - S6
K -Inbound audio level adjustment - R43
L -Power light - DS3
M -Outside speaker volume adjustment - R128
N -Ceiling speaker volume adjustment - R142
O -DM1 microphone switch - S1
P -Wired/Wireless audio system switch - S2

12
VIII. SYSTEM 2500E SPECIFICATIONS
Base Station
1. Voltage input 16VAC ±2.5V
2. AC current input 350mA nominal, 1.4A maximum
3. Audio distortion <5% maximum level
4. Outside speaker output 3 watts RMS into 8 ohms
5. Ceiling speaker power 3 watts RMS into 8 ohms
6. Controls/Switches 2-position vehicle detector switch
(Normal - Override/Reset)
Outside speaker volume control
Outside speaker Hi-Lo volume jumper
“A” sidetone
“B” sidetone
Inbound volume control
VAA level control
Ceiling speaker volume control
Vehicle present tone volume control
(3) 8-position DIP switches
Wireless/wired system select switch
Horn speaker/DM1 select switch
7. RF Frequency Receive — 151.670 - 154.600 MHz
Transmit — 31.400 - 35.020 MHz
8. Dimensions 8.2"H x 14.2"W x 3.5"D
(208mm x 361mm x 89mm)
9. Weight 5.5 lbs (2.49kg) maximum
Battery Charger
1. Voltage input 16VAC +2.5V
2. AC current input 380mA maximum
3. Number of charge ports6
4. Indicators 6 red “Charging” LEDs
6 green “Ready” LEDs
5. Charge time 10-12 hours
6. Dimensions 8”L x 12”W x 3.5”D (203mm x 305mm x 89mm)
7. Weight 6 lbs (2.72kg) maximum
COMMUNICATOR®
1. Battery voltage 6.5V maximum, operational down to 4.2V
2. Battery life 8 hours
3. RF Frequency Receive; 31.400 - 35.020 MHz
Transmit; 151.670 - 154.600 MHz
4. Dimensions 3.8”H x 3.7”W x 1.5”D (97 x 94 x 38mm)
(less pouch and belt)
5. Weight 14 oz (397 gm)
(less pouch and belt)
6. Control On/Off, Volume, button “A” and button “B”
7. Indicator Power-on LED

13
IX. OPTIONAL EQUIPMENT
X. FCC NOTICE
This device complies with Part 15 of the FCC rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful interfer-
ence, and (2) This device must accept any interference received, including
interference that may cause undesired operation.
NOTE:NOTE: This equipment has been tested and found to comply with the limits
for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits
are designed to provide reasonable protection against harmful interfer-
ence when the equipment is operated in a commercial environment. This
equipment generates, uses and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may
cause harmful interference to radio communication. Operation of this
equipment in a residential area is likely to cause harmful interference, in
which case the user will be required to correct the interference at his own
expense.
Changes or modifications not expressly approved by HM Electronics, Inc.
could void the users authority to operate this equipment.
Equipment Model Number
Battery, Spare for COMMUNICATOR®BAT2000
Belt Extender BE20B
Headset, Lightweight HS3, HS5, HS5A
Headset Earmuff
Headset Earmuff and Microphone Cap
Lapel Microphone with Earpiece HS4
Pocket Receiver (battery operated) PR5
Portable Receiver (battery operated) PR6
Antenna (remote) ANT3000
Antenna Diversity System AD3000
Ceiling Speaker MM100
Ultrasonic Vehicle Detector DU1, DU2, DU3
Vehicle Detector Board VDB101
Vehicle Detector Loop (underground) VDL100
Emergency Backup System EMG2000
Emergency Backup System EMG3000
Cabled Intercom IC100, IC200