JVC SR-W320U User Manual

9 RS-232C INTERFACE
Commands
The commands to control the SR-W320U through the
RS-232C interface are given below. See the pages
mentioned for details.
Commands Description
VCR control commands
Acommand complete with one byte. The VCR
VCR control commands See page ... returns ACK (OAh) when it normally receives the
OPERATE ON/OFF command.
PLAY/REVx1 Note:
STILL @ The commands marked with * cannot be used in HD/
FWDx1/6/x7/STILL SD mode.
REVx1/6/x7/STILL @ When issuing commands sequentially, be sure to
STOP check for ACK before sending the next command.
FF/REW
F-FIELD STEP OPERATE ON —7Bh Turns the VCR’s power on.
R-FIELD STEP OPERATE OFF 7Ch Tums the VCR's
EJECT power off.
CUE UP WITH DATA PLAY 3Ah Play
F-SHUTTLE Page 37 STILL 4Fh Pause
R-SHUTTLE REVx1 * 4Ah -1x speed playback
REC/REC PAUSE FWDx1/6 * =3Ch Forward 1/6x speed playback
Page 36 FWDx7 *%* 3Eh Forward 7xspeed playback
TIMER MODE SEL REV STILL * 3Dh Forward Pause
REVx1/6 * ~4Ch Reverse 1/6xspeed playback
: ; Te REVx7 * 4Eh Reverse 7xplayback
VCR information gathering commands See page ... REV STILL %* 4Dh Reverse pause
ROM VER. STOP 3Fh Stop
DEVICE TYPE Page 37 FF ABh Fast forward
VTR INQ REW ACh Rewind
W-VHS STATUS SENS Page 38 F-FIELD STEP * ADh During pause, field advances
STATUS
SENS
Page
37
one
by
one
in
forward
direction
CURENT CTL SENS Page 37 and comes to a pause.
R-FIELD STEP* AEh During pause, field advances
one by one in reverse direction
Return codes from VCR See page ... and comes to a pause.
ACK Page 36 EJECT A3h Removes the cassette
NAK Page 39
ERROR Page 39 The following are the 2 bytes or more commands and
CASSETTE OUT Page 39 those consisting of numerical data.
COMPLETION Page 39 COUNTER RESET E2h
NOR TARCEL Page 39 Counter resets with this command followed by
ENTER (40h)
Others See page ... TIMER MODE SEL E7h
JVC PAGE 1 ON Page 39 Selects timer modes such as CTL, LTC, VITC.
ENTER Page 39 Fixed at CTL MODE in this unit.
CLEAR ERROR 4 Page 39 ACK (0Ah) is returned in respond to this com-
mand followed by 32h. NAK (OBh) is returned in
response to the following data.
31h: LTC MODE
35h: LTC UB MODE
38h: VITC MODE
39h: TC AUTO MODE
3Ch: VITC UB MODE
3Dh: UB AUTO MODE
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9 RS-232C INTERFACE
REC (CAh)
¢ REC MODE entered in response to REC REQ
CMD (FAh) followed by this command.
REC PAUSE (CBh)
« REC PAUSE MODE entered in response to
REC REQ CMD followed by this command.
* NAC (OBh) is returned when the cassette loaded
has its safety tab broken.
CUE UP (B2h)
WITH DATA
« CUE UP can be set at a desired position of the
tape by sending this command followed by
arbitrary numerical data (30h - 39h).
Example) Set 1 hour 32 minutes.
Txp[B2h|__ Boh] Bib} 83h] 2h] fon]
RXD pAb] PAH An pAb = foAn AH
¢ CUE UP operation is entered by sending
ENTER CMD (40h) at the end of the numerical
data.
¢ STOP MODE is entered when CUP UP is
finished and COMPLETION (01h) is returned.
¢ If CUE UP position is not found, NOT TARGET
(05h) is returned.
¢ NAK (OBh) is returned when sending the data
outside the frame of 9 hrs. 59 min. 59 sec. 29 in
forward direction and the frame of 9 hrs. 59 min.
59 sec. 29 in reverse direction.
* PLAY is entered after CUE UP with JVC
TABLE 1 ON.
F-SHUTTLE* (B5h)
* With this command followed by numerical data,
search in forward direction is executed at a tape
speed responsive to the data.
R-SHUTTLE*(B6h)
¢ With this command followed by numerical data,
search in reverse direction is executed at a tape
speed responsive to the data.
Numerical datavs. SHUTTLE SPEED
Numerical data) SPEED
30h STILL
3th 1/30
32h 1/18
33h 16
35h 1
36h 3
37h 7
38h 11
39h 30
Commands for gathering various items of VCR
information
ROM VER. (72h)
Returns the current ROM version.
ist byte 2th Indicates RS-232C
2nd byte 03h In case of SR-W320U
3rd byte **h Current ROM version
VTR INQ (FBh)
Returns ACK (QAh) when VCR is connected.
DEVICE (Dth)
Returns the lower four characters of the SR-
W320U model name by means of ASCII code.
W:57h = -3:33h = -2:32h ~—(0:30h
CURRENT (D9h)
CTL SENS
Returns the address on CTL counter.
SENS
Returns the status of VCR in 5 bytes. Each
byte signifies as follows.
1st byte
[err No. STATUS When BIT is 1
0 ERROR Receives an unacceptable
command. This makes other,
succeeding commands
unacceptable. To cancel this
mode, send CLEAR ERROR
(41H) to VCR.’
1 Always 0
2 SERVO LOCK Not compatible.
3 CASSETTE OUT | No cassette loaded.
4 REC INHIBIT Cassette with safety tab broken.
5 SHORT FF/REW | Not compatible.
6 Always 0
L 7 Always 1
2nd byte
BIT No. STATUS When BIT is 1
1) TAPE END SHORT REW is entered by
detecting white noise at the end of
the tape.
1 TAPE BIGIN SHORT FF is entered by
detecting white noise at the
beginning of the tape.
2 DEW Dewed.
3 WARNING Not compatible. ©
4 AUDIO MUTE Not compatible.
5 VIDEO MUTE Not compatible.
6 AUDIO EE EE signal is fed to the AUDIO
output.
7 VIDEO EE EE signal is fed to the VIDEO
\ output.
37

JVC SR-W320U Specifications

General

Brand	JVC
Model	SR-W320U
Category	Cassette Player
Language	English