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System Data Display Test Mode

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Cbit data:

These hexadecimal codes contain binary data.

Two most significant numbers:

bit 7 & 6; Sample frequency accuracy

7	6	Function
0	0	Normal accuracy mode - "0"
0	1	Variable pitch shifted mode - "4"
1	0	High accuracy mode - "8"

bit 5, 4, 3 & 2; Sampling frequency

5	4	3	2	Function
0	0	0	0	48 kHz - "0"
0	0	0	1	32 kHz - "4"
0	0	1	0	44.1 kHz - "8"

bit 1 & 0; Fixed to 0

Examples:

hex  bin         description
00 - 0000 0000 - Normal accuracy mode; 48 kHz
04 - 0000 0100 - Normal accuracy mode; 32 kHz
08 - 0000 1000 - Normal accuracy mode; 44.1 kHz
40 - 0100 0000 - Variable pitch shifted mode; 48 kHz
44 - 0100 0100 - Variable pitch shifted mode; 32 kHz
48 - 0100 1000 - Variable pitch shifted mode; 44.1 kHz
80 - 1000 0000 - High accuracy mode; 48 kHz
84 - 1000 0100 - High accuracy mode; 32 kHz
88 - 1000 1000 - High accuracy mode; 44.1 kHz

Third Number:

Copy protection & pre-emphasis (x = don't care)

3	2	1	0	Function
0	0	0	x	Pre-emphasis off
0	0	1	x	50/15 uS pre-emphasis1
x	x	x	0	Digital copy prohibited
x	x	x	1	Digital copy allowed

1 - This is not what the service manual says. It says "100x" is pre-emphasis.

Examples:

hex  bin   description
0 - 0000 - Pre-emphasis off; Digital copy prohibited
1 - 0001 - Pre-emphasis off; Digital copy allowed
2 - 0010 - 50/15 uS pre-emphasis; Digital copy prohibited
3 - 0011 - 50/15 uS pre-emphasis; Digital copy allowed

Least significant number:

Signal type: (x = don't care)

3	2	1	0	Function
0	x	x	x	Plul Lock1
1	x	x	x	Plul Unlock1
x	0	x	x	Parity good
x	1	x	x	Parity not good
x	x	0	x	Consumer use
x	x	1	x	Broadcasting use
x	x	x	0	Normal audio mode
x	x	x	1	Non audio mode

1 - PLL lock/unlock. Unlock usually means no incoming digital signal is present.

Examples:
0 - 0000 - Locked; Parity OK; Consumer use; Normal audio.
1 - 0001 - Locked; Parity OK; Consumer use; Non audio use.
2 - 0010 - Locked; Parity OK; Broadcasting use; Normal audio.
3 - 0011 - Locked; Parity OK; Broadcasting use; Non audio use.
4-7 - 01xx - Locked; Parity not OK.
8-15 - 1xxx - Unlocked.
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System data

This is binary data (you should see only 0's and 1's). It shows data recorded on tape and some hardware configuration. "D806" seems to be an option to make the DA-P1 a consumer deck. (x = don't care)

first (left) digit	second digit	third digit	forth digit	fifth (right) digit	Function
0	0	x	x	x	Copy Permitted
1	0	x	x	x	Copy Prohibited
1	1	x	x	x	Special 1
x	x	0	x	x	Normal Track
x	x	1	x	x	Wide Track
x	x	x	0	x	Emphasis Off
x	x	x	1	x	Emphasis On
x	x	x	x	0	SCMS Mode (D806 mounted on front PCB)
x	x	x	x	1	Copy Free Mode (D806 not mounted on front PCB)

Pack Item data

This mode displays the organisation of the "Pack". The Pack is recorded on tape in the subcode region. A Pack consists of 8*8 bytes, and contains seven "Items". Each Item holds one value representing a data type. The date types are:

value	Data type
0	No information
1	Program Time
2	Absolute Time (ATIME)
3	Running Time
4	TOC
5	Calendar (Date)
6	Catalog Number
7	ISRC
8	Pro binary (for professional use)
9-E	reserved
-	No data
F	Invalid data (like no or blank tape)

The organisation of the Pack Items for several decks. The decks marked with * were added by me. Other data comes from the DA-P1 service manual:

Pack Item 1 to 7	Decks
2 1 - - -   - -	Tascam DA-P1, DA-30
2 2 3 8 -   - -	Tascam DA-60
2 - - - -   - -	Tascam DA-20
2 2 2 1 1   5 5	Sony DTC 690, ZA5ES
3 3 3 3 3   8 8	Sony PCM 7050
2 2 1 1 4   4 6	Sony Test Tape TY-7551
2 2 5 5 2   2 2	Sony TCD-D7 (*
2 2 2 2 1   1 1	Sony DTC 790 (*
2 2 2 2 2   2 2	JVC XD-Z507 (*

So there are seven Pack Items and seven Item data types (1-6 + 8). Sony and JVC typically uses all Pack Items to store copies of a few Item Data types.
An example: The Sony TCD-D7 stores five copies of the Absolute time on Pack Items 1, 2, 5, 6 and 7. The Date is stored twice in Items 3 and 4.

Binary to hexadecimal conversion table

                   -34 dBu (~15 mV rms) at 0 dB (mic)
                   -14 dBu (~157 mV rms) at -20 dB (PAD 20dB)