Crystal Vision
Problem solving
TANDEM-200 User Manual R1.7
133
13/02/2008
11.5
Card edge trouble shooting menus
The SEL hex switch provides access to a range of additional status displays when MENU
DIL lever seven is (ON) DOWN and all others are all OFF (UP).
There are two general formats for these status reports. If possible the status for each
TANDEM-200 side function is shown in one menu display. If there is insufficient room
in the display for both sides, two SEL menus are used. A couple of examples will
illustrate the formats used.
The Demux Input Status for side 1 (SDI 1) is shown on the card edge display in the form
A=n_1234dO. A second menu shows the status of SDI 2. In this case the codes used are
as follows ‘n’ is the Audio Group selected, ‘1234’ are the available groups, ‘d’ indicates
that at least one group is marked for deletion and ‘O’ indicates the presence of ‘other’
typically non linear data embedded in the HANC space. A dash ‘-’ in place of one of the
Audio Groups indicates that it is not present and the ‘_’ underscore character simply
means a single character space in the display.
The Status of the Demux Sample Rate (DSR) is shown in the form DxCs_xx_yy, where
‘xx’ represents the DSR status of SDI1 and ‘yy’ represents the DSR status of SDI2. For
example when DxSr_Ok_Ok is displayed, the first Ok refers to SDI1 DSR and the second
Ok refers to the DSR for SDI2.
The following table explains some of the main codes used in the trouble shooting menus:
Code
Meaning
Comments
A
SDI 1 Demux Input
B
SDI 2 Demux Input
C
SDI 1 Mux Output
D
SDI 2 Mux Output
n_1234
Audio Group selected and Audio Groups
present
Example: A=1_1234, Audio Group 1 selected and
Audio Groups 1 – 4 present on side 1
-
No embedded audio for group indicated
Example A=1_12 – 4 : no embedded audio in group 3
on side 1
na
Not available
Used to show status cannot be shown since the
required input is not present
d
Embedded audio Marked for Deletion
Audio data is marked for deletion either by TANDEM-
200 or by upstream equipment.
Example A=1_1234d:
no
INP
No SDI input
Example A=__no INP, no SDI input on side 1
ni
No SDI input
Used in some menus – see further tables
O
Other embedded data present in HANC
space
Other data include SMPTE-291M format data
Example: A=1_1234_O, Other data detected in one or
more Audio Groups
Ok
Parameter within normal operating range
Example: DxSr_Ok_Ok, Demux Sample Rate has
correct number of samples per TV frame sequence for
both SDI1 and SDI2
Er/Err
Erroneous values
Example: Mx_Err, Multiplex (Embed) error
