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22 

J10 

SWT THLD 

 HIGH 

or

 NRML 

SWT THLD 

refers to Switch Threshold.  This jumper is used to change the dynamic gain 

threshold circuitry of the menu microphone.  It should normally be set to NRML.  
Occasionally, the inbound audio volume will decrease when C1060 headsets are used in Talk 
Lock mode.  Set jumper J10 to HIGH, in this case only.   

HIGH 

– Jumper the left two pins ONLY if a decrease in inbound volume is noticed while 

C1060 headsets are being used in Talk Lock mode. 

NRML 

– The Normal setting is used for all configurations except those mentioned in “HIGH.”

 

 

!

 

Important

 

After changing any jumper setting(s), be sure to press the RESET SWITCH on 
the base station circuit board to “read” the change into the microprocessor. 

 

Adjustment Controls 

 

MENU MIC SENS 

Controls the volume of the menu sign audio heard in the headset. 

HEADSET ALERT LEVEL 

Controls the volume of the alert tone heard in the headset. 

DAY 

Controls the volume heard at the menu sign with the Day/Night switch in 
the Day position.  

NIGHT 

Controls the volume heard at the menu sign with the Day/Night switch in 
the Night position. 

MON VOLUME 

Master volume control for the following functions heard through the 
optional monitor speaker: 

MON ALERT 
MON IN 
MON PAGE 
MON TALK 

Controls the alert tone level. 
Controls the audio level coming from the menu sign. 
Controls the page audio level coming from the headset/belt pack 
microphone. 
Controls the talk audio level coming from the headset/belt pack 
microphone. 

 

*Note 

If any of the monitor functions are not desired by the customer, turn the appropriate adjustment 
control completely counterclockwise to silence that particular function. 

Indicators 

POWER 
CHANNEL 1–8 
LOOP FAILURE 
DETECTOR POWER 
NRM 
VEHICLE 
TALK 
PAGE 

Lights when power is applied to the base station. 
Lit LED indicates which channel is selected for base station operation. 
(Optional) Flashes if vehicle loop fails.  
(Optional) Lights if optional Loop Detector is functioning.  
(Optional) Flashes slowly if optional noise reduction module is functioning. 
Lights when a vehicle is detected at the menu sign. 
Lights during communication between headset/belt pack and menu sign. 
Lights during paging from headset/belt pack. 

 

Switches (etc.)  

ON/OFF Switch 
DAY/NIGHT VOLUME Switch 
NRM ON/OFF 
 

Controls power to the base station. 
Selects volume for day or night operation. 
(Optional) Press to turn noise reduction module ON.  Press to turn noise 
reduction module OFF.  

Summary of Contents for C860

Page 1: ...i Headset Intercom Systems Model C860 C960 C960SL C1025 Installation Instructions...

Page 2: ......

Page 3: ...Settings 14 Standard Operation Single Lane System One Base Station 14 Standard Operation Dual Lane System Two Base Stations 14 Duplex Operation Single Lane System One Base Station 15 Duplex Operation...

Page 4: ...tions 5 Figure 6 Base Station Interconnect Module Connections 6 Figure 7 Connecting Components to the Interconnect Module 7 Figure 8 D 15D M478 DA Connections 8 Figure 9 D 15B and D 15C M478 BA and CA...

Page 5: ...t in length to connect the speaker and microphone assembly in the menu sign to the interconnect module or base station Important The twisted pair of wires for the microphone connection must be shielde...

Page 6: ...attery charger will turn on To charge a battery plug it into the charger as shown in Figure 2 Observe the charging status indicator next to the battery The indicator lights RED to indicate the battery...

Page 7: ...above the floor at least 10 feet from the cashier drive thru window At least 3 feet from large metal objects such as refrigerators ranges coolers etc and other metal or electrical devices Important Do...

Page 8: ...interconnect module in position a Remove the backing from the adhesive hook and loop fastener material on the rear of the module b Orient the module to provide the most convenient wire connection arra...

Page 9: ...isted pair audio wire for all connections except the microphone Use an 18 20 gauge shielded twisted pair of audio wire for the connection to the microphone Important The twisted pair of wires for the...

Page 10: ...r microphone and optional monitor speaker to the interconnect module as shown in Figure 7 Note that the connections are made to the TO OUTSIDE terminals on the interconnect module Note If an optional...

Page 11: ...7 Figure 7 Connecting Components to the Interconnect Module 2 EA 1500 OHM Resistors Supplied MYH Duplex Mic...

Page 12: ...re 8 through Figure 10 depending on the model of intercom used The presence alert shown is wired to operate only when the Wireless Base Station is turned off If a separate outside microphone is used t...

Page 13: ...n these installation instructions Important Base station models C921 and earlier must be mounted at least 25 feet apart Base station models C922 may be mounted as close as 2 feet apart 2 With the base...

Page 14: ...icate with a customer at menu sign 1 By pressing the T2 button on any headset another operator can communicate with a customer at menu sign 2 When the Cross Lane Module is OFF the operator will only h...

Page 15: ...tor 20 AWG twisted pair shielded audio cable between the Cross Lane Module and the nearest base station 3 Run a length of two conductor 20 AWG twisted pair shielded audio cable between the Cross Lane...

Page 16: ...s not light on the lane 2 base station 2 Press T2 and verify that the Talk LED lights on the lane 2 base station and does not light on the lane 1 base station c To remove the Cross Lane function and r...

Page 17: ...it is audible in the headsets but not objectionable 2 Listening and Paging in a Cross Lane system The T1 and T2 buttons control which menu sign to talk or listen to They also control which headsets to...

Page 18: ...u Sign with Speaker only OSM Jumper pins 1 and 2 on jumpers J1 and J2 or or Menu Sign with Separate Speaker and Microphone Jumper pins 2 and 3 on jumpers J1 and J2 Lane 1 System Jumper pins 1 and 2 of...

Page 19: ...election Jumper bottom 2 pins of jumper J6 Talk Monitor Level Jumper left 2 pins of jumper J9 or If feedback occurs jumper right 2 pins of jumper J9 Duplex Operation Dual Lane System Two Base Stations...

Page 20: ...With the base station turned on press and release the CHANNEL SELECT switch once This advances the system to the next channel One of the red indicators 1 8 will light indicating the newly selected ch...

Page 21: ...if interference occurs After seven channel changes the original channel will again be encountered If interference is still present and the system is a single lane system try changing the J3 lane desig...

Page 22: ...ight the audio will be too loud 7 Compare this inbound listen level in the headset to the page audio level from another headset 8 Adjust the MENU MIC SENS level down never up to match the page audio l...

Page 23: ...the customer turn the related adjustment control fully counterclockwise to silence the function Standard Systems Only The following procedures apply only to standard systems Note For Standard half dup...

Page 24: ...to increase counterclockwise to decrease 4 Move the DAY NIGHT switch on the base station to the NIGHT position 5 Press and hold the headset belt pack Talk switch and speak into the headset microphone...

Page 25: ...type of communication operation Jumper pins 2 and 3 for standard operation Jumper pins 1 and 2 for duplex operation J6 MENU PWR SEL STD or DPLX STD applies power to outbound speaker amplifiers only wh...

Page 26: ...r volume control for the following functions heard through the optional monitor speaker MON ALERT MON IN MON PAGE MON TALK Controls the alert tone level Controls the audio level coming from the menu s...

Page 27: ...s belt packs to the same channel as the base station For programming new channel selection or jumper setting s into the microprocessor Connectors AUXILIARY Terminal Strip J7 J8 An extra 4 terminals at...

Page 28: ...C960 C860 Headset Intercom System Operating Instructions Troubleshooting Audio Feedback If audio feedback occurs check the following and correct as necessary Is the microphone audio cable shielded twi...

Page 29: ...25 Printed in U S A 3M 2003 October 78 6912 0672 2 Rev H Commercial Care Division Food Services Business 3M Center St Paul MN 55144 1000...

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