PANASTEREO CX230 Manuale utente

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PANASTEREO

PANASTEREOPANASTEREO

PANASTEREO

CX230

CINEMA BOOTH MONIT0R

OWNER'S MANUAL

PANASTEREO CX230 CINEMA MONITOR

PANASTEREO CX230 CINEMA MONITORPANASTEREO CX230 CINEMA MONITOR

PANASTEREO CX230 CINEMA MONITOR

PANASTEREO CX230 CINEMA BOOTH MONITOR

OVERVIEW

The CX230 Monitor is the world’s first computer controlled booth monitor. It is simple to use,

provides advanced features not previously found in booth monitor equipment and has been

designed for easy interface to computer automation systems via a standard RS232 interface

connector.

SYSTEM FEATURES

•Single-chip microprocessor control system with power supervision and watchdog circuits provides high

immunity to interference for reliable latch-up-free operation.

•Monitoring of both sound processor outputs and amplifier outputs.

•Full monitoring of biamp systems.

•Built-in analogue to digital converter with digital bargraph meter for auditorium volume indication.

•Fast Mute function.

•Two-digit LED digital volume indicator.

•Built-in compressor for easier monitoring of highly dynamic (SR or digital) soundtracks.

•Built-in stereo 25watt monitor amplifier.

•All inputs are balanced and isolated for low noise, high quality monitoring and zero interaction with the

cinema sound system.

•All functions (including volume control) accessible via RS232 serial interface.

•Digitised auditorium sound level available via RS232 serial interface for remote indication of volume level

with computer automation systems.

•All monitor connections via removable Phoenix connectors so the monitor chassis can be easily removed

for service.

SYSTEM SPECIFICATIONS

Sound processor Inputs: Nominal 500mV input sensitivity, 10k ohm balanced

Amplifier Inputs: Nominal 5V input sensitivity, 100k ohm balanced

Amplifier Output Power: 2 x 25W RMS into 8 ohms.

PANASTEREO CX230 CINEMA MONITOR

PANASTEREO CX230 CINEMA MONITORPANASTEREO CX230 CINEMA MONITOR

PANASTEREO CX230 CINEMA MONITOR

CX230 OPERATION

MONITORING AN INDIVIDUAL CHANNEL

Select a channel to be monitored by pressing the pushbutton for the appropriate channel once.

An LED indicator will illuminate above the selected input button. Adjust the volume control for a

comfortable listening level. The volume is indicated by the 2-digit display to the left of the control.

Biamp installations only:

It is possible to monitor each of the front channel high and low frequency outputs separately.

Press the left, centre or right pushbutton once to monitor a mix of the high and low frequency

outputs for each channel.

Press the same button a second time to monitor the high frequency output only. Press the same

button a third time to monitor just the low frequency output.

Repeatedly pressing the same button will cycle through the above three options.

MONITORING A MIX

When the MIX button is pressed, the monitor output will be a blend of the front three channels

(left, centre and right).

The surround channel is not included in the mix. This is because the delay that is normally

introduced in the cinema processor for the surround channel may cause confusing echo effects.

The surround and sub bass channels must be monitored individually.

MONITORING THE PROCESSOR OUTPUTS OR THE AMPLIFIER OUTPUTS

Press the SOURCE pushbutton to select either the outputs from the sound processor or the

outputs from the amplifiers.

Repeatedly pressing the SOURCE button will toggle back and forth between the processor and

the amplifier outputs.

MUTING THE MONITOR OUTPUTS

Press the MUTE button to silence the monitor without changing the volume setting. Press the

MUTE button a second time to restore the monitor output to normal.

(Turning the volume down to zero can also mute the monitor, but in this case the volume must be

turned up again to restore the previous listening level).

PANASTEREO CX230 CINEMA MONITOR

PANASTEREO CX230 CINEMA MONITORPANASTEREO CX230 CINEMA MONITOR

PANASTEREO CX230 CINEMA MONITOR

CX230 INSTALLATION

CONNECTING THE SOUND PROCESSOR OUTPUTS.

NOTE: For non-biamped installations, the left channel should be connected to the LL input, the

centre channel to the CL input and right channel to the RL input.

1. SOUND PROCESSOR WITH UNBALANCED OUTPUTS (DOLBY, SMART, ULTRA STEREO)

Use two-core shielded audio cable to connect the outputs from the sound processor to the monitor

“from processor” inputs.

Connect the “+” terminal from each sound processor output to the “+” terminal of each

corresponding monitor “From Processor” input.

Connect the ground terminal of each processor output to the “-“ terminal of each corresponding

monitor “From Processor” input.

Connect the cable shield to the “E” terminal of each monitor “from processor” input only. Do not

connect the shields at the sound processor.

2. SOUND PROCESSOR WITH BALANCED OUTPUTS (PANASTEREO)

Use two-core shielded audio cable to connect the outputs from the sound processor to the monitor

“From Processor” inputs.

Connect the “+” terminal from each sound processor output to the “+” terminal of each

corresponding monitor “From Processor” input.

Connect the “-“ terminal of each processor output to the “-“ terminal of each corresponding

monitor “from processor” input.

Connect the cable shield to the “E” terminal of each monitor “from processor” input only. Do not

connect the shields at the sound processor.

CONNECTING THE AMPLIFIER OUTPUTS.

NOTE: For non-biamped installations, the left channel should be connected to the LL input , the

centre channel to the CL input and right channel to the RL input.

Use light gauge unshielded cable for this purpose.

Connect the “+” (Red) terminal of each amplifier output to the “+” terminal of each corresponding

monitor “From Amplifier” input.

Connect the “-“ (Black) terminal of each amplifier to the “-“ terminal of each corresponding monitor

“From Amplifier” input.

NOTE: DO NOT USE A SINGLE GROUND CONNECTION BETWEEN THE AMPLIFIERS AND THE

MONITOR OR CONNECT THE “-“ (BLACK) TERMINALS OF THE AMPLIFIERS TOGETHER. SUCH

CONNECTIONS MAY CAUSE CROSSTALK, UNPREDICTABLE AMPLIFIER BEHAVIOUR OR DAMAGE

TO WIRING.

PANASTEREO CX230 CINEMA MONITOR

PANASTEREO CX230 CINEMA MONITORPANASTEREO CX230 CINEMA MONITOR

PANASTEREO CX230 CINEMA MONITOR

CX230 INSTALLATION continued

CONNECTING THE MONITOR SPEAKER OUTPUTS

Use medium gauge (minimum 0.75mm2) twin polarised wire (figure 8) between each of the monitor

speaker outputs and the monitor speakers. The monitor speakers can be 8 or 4 ohms.

If you are using only one speaker, connect it to the left channel output and set the

“MONO/STEREO” switch at the back of the monitor unit to the “MONO” position (IN). Otherwise

ensure that the “MONO/STEREO” switch is in the “STEREO” position (OUT).

CONNECTING THE SERIAL INTERFACE TO A COMPUTER AUTOMATION SYSTEM.

Use 4-core shielded computer or audio cable. The CX230 is configured as a DCE device (Data

Circuit Terminating Equipment), i.e. pin 2 = transmit data out and pin 3 = receive data in. Connect

one conductor to pin 2, one to pin 3 and one conductor to pin 5 (ground). The fourth conductor

can be left unused or also connected to pin 5 (ground). Solder the cable shield to the body of the

D-connector plug.

If the connection is to a DTE device (Data Terminal Equipment) such as a PC or the Panalogic

RC140 automation unit, the cable should be wired pin-for-pin (i.e. pin 2 to pin 2, pin 3 to pin 3, and

pin 5 to pin 5). If the connection is to another DCE device, pins 2 and 3 must be crossed over

(reversed) at one end.

PANASTEREO CX230 CINEMA MONITOR

PANASTEREO CX230 CINEMA MONITORPANASTEREO CX230 CINEMA MONITOR

PANASTEREO CX230 CINEMA MONITOR

SYSTEM ALIGNMENT

After installation it is necessary to adjust each of the input levels of the monitor to ensure correct

balance between each input and to calibrate the auditorium sound level meter. Alignment is best

performed at the same time as the sound processor B-Chain alignment to avoid duplication.

Equipment required: Pink Noise Card, Real Time Analyser (RTA)

ALIGNMENT OF NON-BIAMPED SYSTEMS

1. Insert a pink noise card into the appropriate slot in the sound processor.

2. Set the sound processor to Optical Stereo and set the volume to level “7” for a pink noise level

of 85db in the auditorium.

3. Select the pink noise generator to CENTRE.

4. Turn off the Sub Bass amplifier.

5. Check the SPL reading on the RTA. It should be 85dB. If not, check the B-Chain alignment of

the sound processor.

6. Select the “SOURCE” switch to “AMPS”, and select “CENTRE”.

7. Adjust the “AMPLIFIERS - CL” trimpot so that the CX230 sound level meter reads 85db.

8. Select the “SOURCE” switch to “PROC”.

9. Adjust the “Processor - CL” trimpot so that the CX230 sound level meter reads 85db.

10. Turn off the Centre channel amplifier and turn on the Sub Bass amplifier.

11. Note the SPL reading on the RTA.

12. Select the “SOURCE” switch to “AMPS”, and select “SUB BASS”.

13. Adjust the “AMPLIFIERS - SW” trimpot so that the CX230 sound level meter reads the same

as the SPL reading on the RTA.

14. Select the “SOURCE” switch to “PROC”.

15. Adjust the “Processor - SW” trimpot so that the CX230 sound level meter reads the same as

the SPL reading on the RTA.

16. Turn on the Centre Channel amplifier.

PANASTEREO CX230 CINEMA MONITOR

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PANASTEREO CX230 CINEMA MONITOR

17. Select the pink noise generator to LEFT.

18. Check the SPL reading on the RTA. It should be 85dB. If not, check the B-Chain alignment of

the sound processor.

19. Select the “SOURCE” switch to “AMPS”, and select “LEFT”.

20. Adjust the “AMPLIFIERS - LL” trimpot so that the CX230 sound level meter reads 85db.

21. Select the “SOURCE” switch to “PROC”.

22. Adjust the “Processor - LL” trimpot on the monitor so that the CX230 sound level meter reads

85db.

23. Select the pink noise generator to RIGHT.

24. Check the SPL reading on the RTA. It should be 85dB. If not, check the B-Chain alignment of

the sound processor.

25. Select the “SOURCE” switch to “AMPS”, and select “RIGHT”.

26. Adjust the “AMPLIFIERS - RL” trimpot so that the CX230 sound level meter reads 85db.

27. Select the “SOURCE” switch to “PROC”.

28. Adjust the “Processor - RL” trimpot so that the CX230 sound level meter reads 85db.

29. Select the pink noise generator to LEFT SURROUND.

30. Check the SPL reading on the RTA. It should be 85dB. If not, check the B-Chain alignment of

the sound processor.

31. Select the “SOURCE” switch to “AMPS”, and select “LEFT SURROUND”.

32. Adjust the “AMPLIFIERS - LS” trimpot so that the CX230 sound level meter reads 85db.

33. Select the “SOURCE” switch to “PROC”.

34. Adjust the “Processor - LS” trimpot so that the CX230 sound level meter reads 85db.

PANASTEREO CX230 CINEMA MONITOR

PANASTEREO CX230 CINEMA MONITORPANASTEREO CX230 CINEMA MONITOR

PANASTEREO CX230 CINEMA MONITOR

35. Select the pink noise generator to RIGHT SURROUND.

36. Check the SPL reading on the RTA. It should be 85dB. If not, check the B-Chain alignment of

the sound processor.

37. Select the “SOURCE” switch to “AMPS”, and select “RIGHT SURROUND”.

38. Adjust the “AMPLIFIERS - RS” trimpot so that the CX230 sound level meter reads 85db.

39. Select the “SOURCE” switch to “PROC”.

40. Adjust the “Processor - RS” trimpot so that the CX230 sound level meter reads 85db.

The CX230 alignment is now complete.

PANASTEREO CX230 CINEMA MONITOR

PANASTEREO CX230 CINEMA MONITORPANASTEREO CX230 CINEMA MONITOR

PANASTEREO CX230 CINEMA MONITOR

ALIGNMENT OF BIAMPED SYSTEMS

1. Insert a pink noise card into the appropriate slot in the sound processor.

2. Set the sound processor volume to level “7” for a pink noise level of 85db in the auditorium.

3. Select the pink noise generator to CENTRE.

4. Turn off the Sub Bass amplifier.

5. Check the SPL reading on the RTA. It should be 85dB. If not, check the B-Chain alignment of

the sound processor.

6. Turn off the Centre channel low frequency amplifier and note the SPL reading on the RTA.

7. Select the “SOURCE” switch to “AMPS”, and select “CENTRE HF” by pressing the “CENTRE”

pushbutton twice. Only the “HF” LED above the CENTRE pushbutton should be illuminated.

8. Adjust the “AMPLIFIERS - CH” trimpot so that the Cx230 sound level meter reads the same as

the SPL reading on the RTA.

9. Select the “SOURCE” switch to “PROC”.

10. Adjust the ”PROCESSOR - CH” trimpot so that the CX230 sound level meter reads the same

as the SPL reading on the RTA.

11. Turn off the Centre channel high frequency amplifier and turn on the Centre channel low

frequency amplifier. Note the SPL reading on the RTA.

12. Select the “SOURCE” switch to “AMPS”, and select “CENTRE LF” by pressing the “CENTRE”

pushbutton once. Only the “LF” LED above the CENTRE pushbutton should be illuminated.

13. Adjust the “AMPLIFIERS - CL” trimpot so that the CX230 sound level meter reads the same as

the SPL reading on the RTA.

14. Select the “SOURCE” switch to “PROC”.

15. Adjust the ”PROCESSOR - CL” trimpot so that the CX230 sound level meter reads the same

as the SPL reading on the RTA.

16. Switch on the Centre channel high frequency amplifier and check the reading on the CX230

sound level meter. It should be 85dB.

Indice

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