Panasonic KX-FT21RS Service Manual ▷ View online
Bit No.
DIS/DTC
DCS
17, 18
(0, 0)
(0, 1)
(1, 0)
(1, 1)
Recording width capabilities
1728 picture elements along scan line length of
215 mm ± 1%
1728 picture elements along scan line length of
215 mm ± 1% and
2048 picture elements along scan line length of
255 mm ± 1% and
2432 picture elements along scan line length of
303 mm ± 1%
1728 picture elements along scan line length of
215 mm ± 1% and
2048 picture elements along scan line length of
255 mm ± 1%
Invalid
1728 picture elements along scan line length of
215 mm ± 1%
1728 picture elements along scan line length of
215 mm ± 1% and
2048 picture elements along scan line length of
255 mm ± 1% and
2432 picture elements along scan line length of
303 mm ± 1%
1728 picture elements along scan line length of
215 mm ± 1% and
2048 picture elements along scan line length of
255 mm ± 1%
Invalid
Recording width
1728 picture elements along scan line length of
215 mm ± 1%
2432 picture elements along scan line length of
303 mm ± 1%
1728 picture elements along scan line length of
215 mm ± 1%
2432 picture elements along scan line length of
303 mm ± 1%
2048 picture elements along scan line length of
255 mm ± 1%
255 mm ± 1%
Invalid
19, 20
(0, 0)
(0, 1)
(1, 0)
(1, 1)
(0, 1)
(1, 0)
(1, 1)
Maximum recording length capability
A4 (297 mm)
Unlimited
A4 (297 mm) and B4 (364 mm)
Invalid
A4 (297 mm)
Unlimited
A4 (297 mm) and B4 (364 mm)
Invalid
Maximum recording length
A4 (297 mm)
Unlimited
B4 (364 mm)
Invalid
A4 (297 mm)
Unlimited
B4 (364 mm)
Invalid
Signal.....DCS (Digital Command Signal)
Identification Signal Format.....X1000001
Identification Signal Format.....X1000001
Function:
Notifies the capacity of the receiving machine obtained at DIS and announces the transmission mode of the sender. The
added data signals are as follows.
Notifies the capacity of the receiving machine obtained at DIS and announces the transmission mode of the sender. The
added data signals are as follows.
(Example)
Bit No.
DIS/DTC
Standard setting
DCS
21, 22, 23
(0, 0, 0)
(0, 0, 1)
(0, 1, 0)
(1, 0, 0)
(0, 1, 1)
(1, 1, 0)
(1, 0, 1)
(1, 1, 1)
(0, 0, 1)
(0, 1, 0)
(1, 0, 0)
(0, 1, 1)
(1, 1, 0)
(1, 0, 1)
(1, 1, 1)
Minimum scan line time capability of the receiver
20 ms at 3.85 l/mm: T7.7 = T3.85
40 ms at 3.85 l/mm: T7.7 = T3.85
10 ms at 3.85 l/mm: T7.7 = T3.85
5 ms at 3.85 l/mm: T7.7 = T3.85
10 ms at 3.85 l/mm: T7.7 = 1/2 T3.85
20 ms at 3.85 l/mm: T7.7 = 1/2 T3.85
40 ms at 3.85 l/mm: T7.7 = 1/2 T3.85
0 ms at 3.85 l/mm: T7.7 = T3.85
20 ms at 3.85 l/mm: T7.7 = T3.85
40 ms at 3.85 l/mm: T7.7 = T3.85
10 ms at 3.85 l/mm: T7.7 = T3.85
5 ms at 3.85 l/mm: T7.7 = T3.85
10 ms at 3.85 l/mm: T7.7 = 1/2 T3.85
20 ms at 3.85 l/mm: T7.7 = 1/2 T3.85
40 ms at 3.85 l/mm: T7.7 = 1/2 T3.85
0 ms at 3.85 l/mm: T7.7 = T3.85
Minimum scan line time
20 ms
40 ms
10 ms
5 ms
20 ms
40 ms
10 ms
5 ms
0 ms
24
Extend field
1
Extend field
25
2400 bit/s handshaking
0
2400 bit/s handshaking
26
Uncompressed mode
0
Uncompressed mode
27
Error correction mode
0
Error correction mode
28
Set to "0".
0
Frame size 0 = 256 octets 1 = 64 octets
29
Error limiting mode
0
Error limiting mode
30
Reserved for G4 capability on PSTN
0
Reserved for G4 capability on PSTN
31
Unassigned
0
32
Extend field
1
Extend field
33
(0)
(1)
(1)
Validity of bits 17, 18
Bits 17, 18 are valid
Bits 17, 18 are invalid
Bits 17, 18 are valid
Bits 17, 18 are invalid
0
Recording width
Recording width indicated by bits 17, 18
Recording width indicated by this field bit
information
Recording width indicated by bits 17, 18
Recording width indicated by this field bit
information
34
Recording width capability 1216 picture elements along
scan line length of 151 ± mm 1%
scan line length of 151 ± mm 1%
0
Middle 1216 elements of 1728 picture elements
35
Recording width capability 864 picture elements along
scan line length of 107 ± mm 1%
scan line length of 107 ± mm 1%
0
Middle 864 elements of 1728 picture elements
36
Recording width capability 1728 picture elements along
scan line length of 151 ± mm 1%
scan line length of 151 ± mm 1%
0
Invalid
37
Recording width capability 1728 picture elements along
scan line length of 107 ± mm 1%
scan line length of 107 ± mm 1%
0
Invalid
38
Reserved for future recording width capabilities.
0
39
Reserved for future recording width capabilities.
0
40
Extend field
1
Extend field
41
Semi super time / mm
1
42
Semi super time / mm
0
43
Super time
0
44
Inch
0
45
mm
1
46
MSC/SF
0
47
Select Polling
0
48
EXT
0
Note 1 - Standard facsimile units conforming to T.2 must have the following capability: Index of cooperation (IOC)=264.
125
KX-FT21RS
Note 2 - Standard facsimile units conforming to T.3 must have the following capability: Index of cooperation (IOC)=264.
Note 3 - Standard facsimile units conforming to T.4 must have the following capability: Paper length=297 mm.
Signal
Identification Signal Format
Function
Training 1
———————
A fixed pattern is transmitted to the receiving side at a speed
(2400 to 9600 bps) designated by DCS, and the receiving side
optimizes the automatic equalizer, etc., according to this signal.
(2400 to 9600 bps) designated by DCS, and the receiving side
optimizes the automatic equalizer, etc., according to this signal.
TCF
(Training Check)
(Training Check)
———————
Sends 0 continuously for 1.5 seconds at the same speed as the
training signal.
training signal.
CFR
(Confirmation to Receive)
(Confirmation to Receive)
X0100001
Notifies the sending side that TCF has been properly received. If
TCF is not properly received, FTT (Failure To Train) X0100010 is
relayed to the sender. The sender then reduces the transmission
speed by one stage and initiates training once again.
TCF is not properly received, FTT (Failure To Train) X0100010 is
relayed to the sender. The sender then reduces the transmission
speed by one stage and initiates training once again.
Training 2
———————
Used for reconfirming the receiving side like training 1.
Image Signal
Refer to the next page.
———————
RTC
(Return to Control)
(Return to Control)
———————
Sends 12 bits (0...01 × 6 times) to the receiver at the same speed
as the image signal and notifies completion of transmission of the
first sheet.
as the image signal and notifies completion of transmission of the
first sheet.
EOP
(End of Procedure)
(End of Procedure)
X1110100
End of one communication
MCF
(Message Confirmation)
(Message Confirmation)
X0110001
End of 1 page reception
DCN
(Disconnect)
(Disconnect)
X1011111
Phase E starts.
MPS
(Multi-Page Signal)
(Multi-Page Signal)
X1110010
Completion of transmission of 1 page. If there are still more
documents to be sent, they are output instead of EOP. After MCF
reception, the sender transmits an image signal of the second
sheet.
documents to be sent, they are output instead of EOP. After MCF
reception, the sender transmits an image signal of the second
sheet.
PRI-EOP
(Procedural Interrupt-EOP)
(Procedural Interrupt-EOP)
X1111100
If there is an operator call from the sender, it is output after RTC.
PIP
(Procedural Interrupt Positive)
(Procedural Interrupt Positive)
X0110101
This is output when an operator call is received.
126
KX-FT21RS
b. Redundancy Compression Process Coding Mode
This unit uses one-dimensional MH format.
127
KX-FT21RS
6.6.2. MODEM CIRCUIT OPERATION
The ASIC (IC1) has all the hardware satisfying the ITU-T standards mentioned previously.
The modem is included in IC1. The signal communicates with the TEL line through the analog front end IC (IC5) of digital/analog,
analog/digital convertor. The modem in IC1 is operated using the 20.736 MHz (x2) clock.
The modem is included in IC1. The signal communicates with the TEL line through the analog front end IC (IC5) of digital/analog,
analog/digital convertor. The modem in IC1 is operated using the 20.736 MHz (x2) clock.
1. Facsimile Transmission/DTMF Line Send
The digital image data on the data bus is modulated in the modem (IC1), and sent to analog front end (IC5) as the digital data,
then it is converted to the analog signal there. Passing through IC9 and IC6, the signal is sent to NCU section.
then it is converted to the analog signal there. Passing through IC9 and IC6, the signal is sent to NCU section.
[IC1
→
IC5
→
IC5(3)
→
C48
→
R37
→
R38
→
IC9 (2)
→
IC9 (1)
→
C53
→
IC6 (2)
→
IC6 (1)
→
C58
→
R49
→
IC9 (6)
→
IC9
(7)
→
CN10 (1)]
→
CN202 (1)
→
C106
→
R103
→
R102
→
T101
→
C8
→
Q4 (C)
→
Q4 (E)
→
D1
→
TEL LINE
[ ]: Digital section
2. Facsimile Reception
The analog image data which is received from the telephone line passes through the NCU section and enters pin 15 of the
analog front end (IC5). The signals that enter pin 15 of the analog front end (IC5) convert the analog signals to the digital
signals, then the data is sent to the modem (IC1).
analog front end (IC5). The signals that enter pin 15 of the analog front end (IC5) convert the analog signals to the digital
signals, then the data is sent to the modem (IC1).
TEL LINE
→
D1
→
Q4 (E)
→
Q4 (C)
→
C8
→
T101
→
R104
→
C107
→
R112
→
IC101 (6)
→
IC101 (7)
→
C127
→
IC103
(11)
→
IC103 (10)
→
CN102 (10)
→
[CN9 (10)
→
IC6 (10)
→
IC6 (11)
→
R33
→
C43
→
IC5 (15)
→
IC5
→
IC1]
[ ]: Digital section
3. DTMF Transmission
The DTMF signal generated in the ASIC (IC1) is sent to the analog front end (IC5) to perform the digital/analog conversion, then
output from pin 3 of IC5, and is then sent to the circuit on the same route as used for facsimile transmission.
output from pin 3 of IC5, and is then sent to the circuit on the same route as used for facsimile transmission.
(DTMF Monitor Tone)
[IC1
→
IC5
→
IC5(3)
→
C48
→
R37
→
R38
→
IC9 (2)
→
IC9 (1)
→
C54
→
R44
→
IC8 (2)
→
IC8 (1)
→
C27
→
R13
→
IC1
(62)
→
IC1 (63)
→
C62
→
IC8 (5)
→
IC8 (7)
→
C67
→
CN10 (9)]
→
CN202 (9)
→
R122
→
IC102 (4)
→
IC102 (5)
→
SPEAKER
[ ]: Digital section
4. Call Tone Transmission
This is the call signal which is generated in the ASIC (IC1) and sent to the speaker.
[IC1 (59)
→
R28
→
C45
→
R35
→
IC8 (2)
→
IC8 (1)
→
C27
→
R13
→
IC1 (62)
→
IC1 (63)
→
C62
→
IC8 (5)
→
IC8 (7)
→
C67
→
CN10 (9)]
→
CN202 (9)
→
R122
→
IC102 (4)
→
IC102 (5)
→
SPEAKER
[ ]: Digital section
5. Busy/Dial Tone Detection
The path is the same as FAX receiving.
128
KX-FT21RS
