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GEC 880 Service Manual

SERVICE MODE

1.2/0111

11

SERVICE MODE

The call station is in 

USER MODE

 after booting. Via a special key combination unknown to operators

you can enter the so-called 

SERVICE MODE

, where more settings than in 

USER MODE

 can be

applied. All settings are entered via the keyboard.

Via the key combination 

 + 

 + 

 (press simultaneously with key 

 first – easily to be remembered

– because situated in a diagonal row) you can switch to 

SERVICE MODE

 and back to 

USER MODE

.

As long as the call station is in service mode, each of the 6 digits of the display will show a dot (e.g.

S.T.D.B.Y.

 

 instead of

 

STDBY

).

With the key 

 it is possible to scroll through the list of parameters. With the keys 

and

 the value

of the individual parameters can be changed. 

Parameter 

Description

Value
range

Default 
value

ACK

Acknowledgement tones ON/OFF (“keypad tones”)

0 = OFF
1 = ON

0

AEC

Noise surpression

0 = service side OFF, client side OFF
1 = service side ON, client side OFF
2 = service side OFF, client side ON
3 = service side ON, client side ON

3

ALM

Sabotage alarm

0

ANK

Automatic switch off
time

0= OFF
1-30 = automatic swich off time (s)

0

BEL

Ring tone for contact

0 = OFF
1 = make
2 = break (contact)

1

GNG

Call gong

0 = OFF
1 = ON

1

LCD

Adjustment of LCdisplay contrast

1...10

5

LED

Brightness of the LED

1...10

5

MAX

Mode of the AUX output

0 = AUX OFF
1 = AUX reflect service side
2 = AUX reflect user side
3 = AUX reflect both sides

0

MEX

Amplification outside microphone

Increase in 0.5 dB steps
0...127

MIC 480

90

Q400 v2.0 (AGK)

90

Q400 v1.0 (Peiker)

102

X-MIC 473 (Schwanenhals)

96

MHS

Amplification headset microphone

75

NLP

NLP (Non-linear Processor) + AHC (Anti-howling control)

0 = NLP OFF; AHC OFF
1 = NLP ON; AHC OFF
2 = NLP OFFs; AHC ON
3 = NLP ON, AHC ON

3 (may not be 
changed)

SZE

Size of speaking zone of external microphone

0 = limit OFF
1 = limit approx. 2,5m  (8.2 ft)
9 = limit approx. 25 cm (9.8 in)

5

SZI

Size of speaking zone of internal microphone

5

VAX

Volume AUX-output*

0...10

10

VCE

Volume of the tones in the outside zone (call gong, alarm tone)

0...10

5

VCI

Volume of the tones at the inside station (keypad tones, ring 
tone, alarm tone)

1...10

5

VEB

Volume of external speaker in BOOST Mode

1...13

8

VEX

Volume of external speaker

1...13

8

* for connection to  Audiocom

Summary of Contents for C-GEC881S.C

Page 1: ...GEC 880 Service Manual Version 1 2 0111 PRODUCT MANUAL ENGLISH...

Page 2: ...towels to clean the station PRECAUTIONS To prevent defects do not expose the station to rain or moisture Do not open the station Refer servicing to qualified personnel only Do not connect ethernet de...

Page 3: ...5 Installation 7 Components and cabling 7 Power supply and wall socket 7 Mounting of the client side 8 Microphone client side 8 Positioning of the client side micophon 9 Loudspeaker client side 10 Po...

Page 4: ...in microphone with omnidirectional characteristic for unrestricted speech Keypad with 15 keys printed with easily understood pictograms Extent of supply Wall mounting box for surface mounting 3 m con...

Page 5: ...range 0 C to 50 C 32 F to 122 F Storage temperature range 20 C to 60 C 4 F to 140 F Relative humidity 20 to 80 Measurements GEC 881 66 x 55 x 230 mm 2 6 x 2 2 x 9 1 in GEC 882 179 x 280 x 230 mm 7 1...

Page 6: ...cluded U type mounting bracket Dimensions including brackets W 100 mm H 300 mm D 98 mm 3 9 x 11 8 x 3 9 Colours Black AL10 16S White AL10 16W Technical Data PA 24W15V Primary 90 264 VAC 47 63 Hz Secon...

Page 7: ...ossed The outside loudspeaker microphone and bell button are connected to the wall socket Pin assignment see Components and cabling above Attention Do not mis connect the wires of the outside micropho...

Page 8: ...de Microphone client side The outside microphone should not be mounted nearby the outside loudspeaker and most notably it should not face the sound beam of the speaker s The call station will try to s...

Page 9: ...ll the audio quality decreases The two most common cases are shown in the following figures Situation 1 Situation 2 Settings For a the optimal audio quality don t change the parameters SZE AEC NLP Nor...

Page 10: ...rray should be used to address only the parts of the outside area in which the customer is situated Depending on the building construction the line array is positioned in horizontally or vertically se...

Page 11: ...client side ON 3 ALM Sabotage alarm 0 ANK Automatic switch off time 0 OFF 1 30 automatic swich off time s 0 BEL Ring tone for contact 0 OFF 1 make 2 break contact 1 GNG Call gong 0 OFF 1 ON 1 LCD Adj...

Page 12: ...rces A characteristic which is more noise cancelling is desired Remedy Increase the value of parameter SZI Be careful the speaker has to reduce the distance from his mouth to the internal microphone n...

Page 13: ...GEC 880 Service Manual Technical Support 1 2 0111 13 Technical Support For more information about our products and services please visit www software manuals com...

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