Service manual
AI8
27
ON OFF
For the 75 switch item, the pop-up box is displayed below and the inspector
judges visually on the oscilloscope.
Please check [WordClock 75ohm SW].
NGOK
Normal behavior on the
oscilloscope for 75 switch.
For the jitter ** kHz item, the pop-up box is displayed with the system in the
48/44.1 kHz output state to ask the user to measure the jitter. The inspector
judges the jitter.
Please check [Jitter (48kHz)].
NGOK
Please check [Control Input Port SW].
NGOK
When moving from the jitter measurement to the In/Out check, the the pop-up
box is displayed to ask the user to change the connections.
Connect [AI8 BNC Out] to [AO8 BNC In].
OK
For the LED lighting order, see *1. If the LEDs light this way, they are OK.
(*1) 7-segment LED lighting order
0.0. 1.1 .2.2. · · · 9.9.
* Control Input Port SW
4. AI8-IPC3, LED1 Test OK
4. AI8-IPC3, LED1 Test
OK
OK
* W.CLK 75ohm SW OK
* Phantom Master SW OK
* 7segments LED OK
* W.CLK OK
In 48 kHz + 6%
In 44.1kHz - 10%
Jitter 48 kHz
Jitter 44.1kHz
DIR2
In/Out
Control Input Port SW:
OKWordClock 75ohm SW:
OKPhantom Master SW:
OK7segments LED:
OKW.CLK:
Control Input Port SW= xxx
4. AI8 - IPC3, LED1 test
This test checks around the AI8 - IPC3 and LED1.
When other checks are necessary, the pop-up dialog box is displayed to ask the inspector
to select OK or NG and the system stands by until the inspector makes a selection.
The current switch status is displayed in real time and the inspector looks at the behavior
of the system and judges it OK/NG.
* RQ OK
5-1. AI8-IPC1 [PortA] Test OK
5-1. AI8-IPC1 [PortA] Test
SO: OK
RQ: OK
AK: OK
W.CLK: OK
CONTROL: OK
ID:
MSB/LSB:
2CH/4CH:
OK
OK
OK
* SO OK00000000
* AK OK
* W.CLK OK
* CONTROL OK
* ID
* MSB/LSB
* 2CH/4CH
OK
OK
OK
In
Out
Change to [B port] and push OK button.
OK
When changing to the next port, a pop-up
box like that on the right is displayed.
Change the connections and click the OK
button.
Displays the current port.
Please refer to page 25
for charts showing the
same detailed result as
those up until now.
5. AI8 - IPC1 test
This test checks around the AI8 - IPC1. Ports A, B, and C are all checked, so the same procedure is carried out in 5-1 for Port A, in
5-2 for Port B, and in 5-3 for Port C.
Detects PLL for valid detection (IC301 of IFC3 sheet).
NG sample
Please refer to page 25 for NG charts.