9.11 Soundsubsystem F030 C-LAB Mark X

Einige Probleme mit dem F030 Mark X

Technische Daten des C-LAB MK-X:

System Architektur
Motorola 68030-CPU, 256 Byte Daten und Instruc. Cache - 16Mhz Takt
32-bit Daten- u. Adress-Struktur
512KB internes ROM
14MB Ramspeicher (maximal)

Digitaler Signal Prozessor
Motorola DSP 56K mit 32Mhz Takt
32K (Word) SDRAM-Speicher / 0-Wait States
19 Pin externer DSP-Anschluß für Digital-Interfaces

Sound
16-Bit Stereo D/A-Wandler mit 1Bit DAC Bitstream sowie 256 fach Oversampling
Acht 16-Bit Digital Audio DMA Kanäle für Aufnahme u. Wiedergabe
für Samplingraten bis 50Khz
Stereo Input mit 6.3mm Klinke (LineLevel bis +4dbm)
Stereo Output über 6.3mm Klinke (maximum +4dbm)

interne Datenspeicherung
1-2GB SCSI-2 oder IDE-Festplatte(n)
Wechselplattenlaufwerke (Nomai MDC540 oder IOMEGA Jaz 1GB)

externe Systemanschlüsse
MIDI IN & MIDI OUT
DSP-Port für Digital Interfaces / analoge Erweiterungen
SCSI2-Anschluß für weitere externe SCSI-Devices (CD-Recorder, Wechselplatten)
analoger RGB/VGA-Videoausgang
Bi-direktionaler Druckeranschluß
RS232 Schnittstelle
LAN-Port (seriell)
2 Joystick Anschlüsse
Romport für Dongles

Optionen
Westernstecker für MegaST(e) (MK-X)
PC-Keyboard Interface für PC-AT Keyboards
SPDIF-Interface (Optisch / Coaxiale Ein- u. Ausgänge)
ADAT-Interface (Optisch mit DSP-Thru) (Ein- u. Ausgang

I had seen a post recently about a user having problems with the audio in/out on one of the new (U.S.) C-Lab Mark X Falcons.

The following is what I found to be the problem that existed with my machine.

The new audio card that C-Lab has made to accomidate 1/4" plugs was installed upside
down, if you use as a reference the silk screen identification on the board and the printed diagram on top of the Mark X case. This in it self would only reverse what one would think was the input and outputs at the rear of the machine. However, the connector from the motherboard to the audio card was improperly installed as well, making it seem like there was output to only one channel (poor at that).

There are five pins on the motherboard that this cable connects to.
The two pair that are grouped together are the L/R audio in and out. The lone pin with one wire should connect to the pin on the audio card that is tied to the ground plane of the card. Trace this lead through the connector and align it so the single pin wire on the motherboard connects to the pin that is tied to the ground plane of the audio card. Your audio should work fine now.

Alternately, as the audio card will not fit properly if the internal speaker is left installed, (glued is the word here) one could switch the connections on the motherboard to get the proper in/out reference, keeping the ground to ground connection proper.

Another problem I have noted with the Mark X is that C-Lab has used PAL motherboards for the U.S. models.
There is no RF modulator installed on the motherboard.
When using a composite cable adapter on the monitor port (for using a VCR or video monitor) your display will only be in black and white reguardless of the video settings in the Falcon menu.
So much for video output to VCR without an expensive video scan converter for the VGA output.......

If you already have a ram card that has the simm's on top of the board, you will not have room to use the card without hacking the C-Lab utility mounting rack :(. I purchased a Wizztronics ram card. The 72 pin simm installs on the underside of this card keeping it the same hight as the standard Falcon memory card.
In other words, you will need a 72 pin simm and Wizztronics ram card for a 14mb upgrade. I just paid $135.00 for a 16mb 60ns simm from my local PC dealer. I think Wizztronics gets $99.00 for their card.

You only get the standard powersupply with no extra connectors as standard.

The internal SCSI connector is not standard. $60.00 for the non-standard IDE/SCSI/powercable. Still uses the standard powersupply.

A replacement powersupply can be obtained from JAMECO at http://www.jameco.com Request a catalog and take a look. If you lack knowledge in powersupplies have an electronics type friend make the selection and installation for you.

The new case is very clean and sturdy. I just wish they would have taken the time to test the assembled units before shipping, and spent another couple of bucks replacing the powersupply and installing a standard SCSI connector.

I'm not being negitive, just bitching.

Mike

- Michael Grove
mgrove@owens.ridgecrest.ca.us
Pictures (c) M.Grove