Yamaha QL1 User Manual

QL5/QL1
134
1-11. AES/EBU(OUT) test
Contents Checks by the sound with the speaker connected.
Refer to the 128 page for a connection method.
Example of executing screen
Check if 1 kHz sine wave is heard from the speaker. If it is
heard, input OK and if not, input NG using the dialog box.
1-12. MIDI test
Contents Checks if the data output to the MIDI terminal and
the loopback data received are the same.
Refer to the 128 page for a connection method.
Example of executing screen
1-10. WORD CLOCK Test
Contents Checks WORD CLOCK OUT → IN automatically
by counting it at PLLPU.
(Fs=44.1/48 kHz) Checks PLL LOCK by reading the
UNLOCK signal when the clock has been stabilized
after the Fs change (after about 200 ms).
Example of executing screen
Various Fs (frequencies) for the PLL LOCK check are generated
in Internal Clock of FPGA.
Fs = 44.1 kHz, 48 kHz
During the UNLOCK check, a message will appear indicating
to disconnect the WORD CLOCK cable as shown below. Then
disconnect the BNC cable.

Yamaha QL1 Specifications

General

Channels quantity	40 channels
Digital sound processing	- bit
AC input voltage	100-240 V
AC input frequency	50 - 60 Hz
Power consumption (typical)	135 W
Product color	Black
Rack mounting	Yes
Video capability	-
Total Harmonic Distortion (THD)	0.05 %

Weight and Dimensions

Depth	562 mm
Width	468 mm
Height	272 mm
Weight	14700 g