QSC Audio DSP0002 manual DSP-3Hardware Support Troubleshooting, Guide, COM port settings for DSP-3

START	DSP-3 Hardware Support Troubleshooting
		Guide
					The DSP-3
					requires the
			Is the amplifier a	No	use of an
					external power
			CX, DCA or PL2?
					supply with all
		Is the DPX-1	No
Does DSP-3 have	No				other
		power supply			amplifiers.
power (blue LED)?
		being used?

Yes
				Select the	Yes
Does DSP-3 go	No	Is the correct		correct COM
		COM port	No	port in the
online?
		selected?		Tools>Options
				>DSP menu.
		Yes

Yes

Was amplifier

manufactured after

August 1999?

Yes

CX, DCA, PL2

amps made prior

to 8/99 do not

provide

adequate power.

No

Use DPX-1 or send amp to QSC Technical Services for modification.

A 4 channel CX

				DSP-3s manufactured before
	Is the DSP-3			7/99, or DSP-3s that have the
				word ’DATA PORT’ printed
	connected to the
				between the RS-232 and
	computer using the
			No
				DataPort connectors on the
	correct cable?
				front label use a NULL MODEM
				cable. In all other cases USE a
				STRAIGHT THROUGH
		Yes
				SERIAL cable. If in doubt, try
Yes
				the opposite cable of what is

Try plugging DPX-1 into a different outlet or measure output voltage of DPX-1 for 15 volts.

Is a DPX-2

DataPort

cable being

used?

Yes

or DCA

amplifier

requires two

No DataPort cables, one

from each pair of channels to each DSP-3.

	being used.
Are there any
applications running	No	Return DSP-3 to
that use the same
		QSC for repair.
COM port (ex. hyper
terminal)?	Reboot computer
	and operate
Yes	Signal Manager
	without other
	applications
	active.
Does the DSP-3 go	See DSP-3
off-line periodically?
	Signal Manager
No
	Software Support
	Troubleshooting
Yes	Guide.

The operating system has not been qualified

Failed

The fuse in the amplifier may have blown. Check voltage

across pin 9 & 6 of DataPortNo connector on amp for 15V

power. Use DPX-1 or return

amp to QSC for repair.

Which operating system

for use with

Signal Manager.

is being used; is it: Windows 95

Signal Manager

4.01.0970B B or OSR2, Windows No

98, or Windows NT 4.0 w/service

may or may not

pack 5 or later?

work with operating

systems that

have not been

qualified.

Yes

Check COM port

settings. See

Figure 1.

Figure 1: COM port settings for

DSP-3

2 DSP0002