Technical data

www.asti-usa.com ASTi DACS: Operation & Maintenance Manual (Version 4, Rev. B.1)

Waveform Synthesizer and TDM Controller Cards

The following procedures apply to all DACS models for both the Waveform Synthesizer and

TDM Controller cards.

EQUIPMENT REQUIRED:

• #1 Phillips Screwdriver

GENERAL INFORMATION:

Each Waveform Synthesizer and TDM card has both jumpers and a rotary switch for address

selection. One, and only one, card must be jumpered as a “Master” card. The rest should be jum-

pered as “Slave” cards. When TDM and Waveform Synthesizer cards are present together in the

same chassis, the TDM card will always be the Master.

In addition, the rotary switches should be set to 6 and 1, 6 and 2, 6 and 3, etc. 6 and 1 will be DSP

number one, 6 and 2 will be DSP number 2, etc. DSP number one should be jumpered as the mas-

ter. Each card must have a unique address

All systems that are sent from ASTi will be correctly conﬁgured. If a card is being replaced, the

simplest thing is to duplicate the settings of card being replaced.

Consult your engineering drawings for additional conﬁguration information.

REMOVAL:

• Perform Power Down Sequence described in Chapter 4, DACS Operation.

• Before proceeding, take care that ESD precautions are observed by ensuring that both you

and the equipment are properly grounded.

• Disconnect all cables from the system.

• Using the Phillips screwdriver, remove the screws holding the top of the chassis in place.

Check the front, top, rear, and sides of chassis for locations of the screws, which may vary

from system to system.

• Unscrew the screw holding the synthesizer or TDM card in place.

• If there is a ribbon cable connecting the card to other cards, remove it. Mak

e a note of which

cards were connected by the ribbon cable, because you will need to reinstall it.

• Gently pull the card out of the slot, rocking it back and forth slightly, if necessary.

• Make a note of the Jumper settings and settings on the two rotary switches. The replacement

card will need to be set identically.

• Place the card in an anti-static bag for ESD protection.

INSTALLATION:

• Perform Power Down Sequence described in Chapter 4, DACS Operation.

• Before proceeding, take care that ESD precautions are observed by ensuring that both you

and the equipment are properly grounded.