JVC BR-DV600UA 45 pg user manual for BR-DV600U/E VTR (1130KB) - Page 18

11 RS-232C INTERFACE 11-2 RS-232C specifications 9PIN D-Sub 12 34 5 69 Pin NO. Signals Operations 2 RXD Receive data 3 TXD Transmit data 4 DTR Data terminal ready 5 GND Signal ground 6 DSR Data set ready Direction of signals VTR p PC VTR [ PC VTR [ PC VTR p PC Note: PC means a controller such as a personal computer. Mode : Non-synchronous Character length : 8 bits Parity check : None Start bit : 1 Stop bit : 1 Data rate : 9600 bps Bit structure ASCII code table Use this table to express the values or alphabets on the RS-232C interface. 0 12 3 4 5 6 7 8 9 ABCDEF 0 SP 0 P p 1 1 A Qa q 2 2 BRb r 3 3 CSc s 4 4 DTd t 5 5 EUe u 6 6 FVf v 7 7 G Wg w 8 8 HXh x 9 9 I Yi y A J Zj z B Kk C L l D Mm E Nn F Oo D0 D1 D2 D3 D4 D5 D6 D7 Start bit Stop bit 32 11 RS-232C INTERFACE 11-3 RS-232C commands An optional RS-232C interface can be installed in this unit and connected to a personal computer. Data transmitted and received via the RS-232C interface enables the PC to control the VCR and gather status and operating information. VCR operation commands Preparation To control the VCR via the RS-232C interface, set the No. 050 menu switch to "RS232C", "IEEE 1394 + RS232C", "JVC BUS + RS232C" or "JVC BUS + RS232C + 1394". These commands are used to operate the VCR. When the command is received correctly, the VCR returns ACK (OAh) and enters the mode corresponding to the command. (e.g.) Playback TXD 3Ah RXD 0Ah Commands Description 3A PLAY Play 3B FWD X2 2x play 3C FWD X0.2 0.2x play 3D F-STILL Pause 3E FWD X10 10x play 3F STOP Stop 4A REV X1 Reverse play 4B REV X2 2x reverse play 4C REV X0.2 0.2x reverse play 4D R-STILL Pause 4E REV X10 10x reverse play 4F STILL Pause 7B OPERATE ON Operating mode ON 7C OPERATE OFF Operating mode OFF A0 STANDBY ON Standby ON A1 STANDBY OFF Standby OFF A2 PREROLL Preroll A3 EJECT Eject cassette AB FF Fast-forward. When this command is transmitted during playback, playback speed changes to 10x. AC REW Rewind. When this command is transmitted during playback, reverse playback starts at 10x. AD F-FIELD STEP Advances one frame. This command should be transmitted in the Play-Pause mode. AE R-FIELD STEP Reverses one frame. This command should be transmitted in the Play-Pause mode. B2 CUE UP WITH DATA Use this command to cue up a specified point on the tape. When the tape is cued, COMPLETION is returned and the Pause mode is engaged. To specify the cue point, transmit the time data (hour: minute: second: frame, a total of 8 bytes with 2 bytes for each) following this command. B3 CUE UP AND PLAY WITH DATA Use this command to cue up a specified point on the tape. When the tape is cued, COMPLETION is returned and the Play mode is engaged. To specify the cue point, transmit the time data (hour: minute: second: frame, a total of 8 bytes with 2 bytes for each) following this command. B5 F-SHUTTLE Shuttle play. The search speed is specified by sending the speed code data after this command (see the table below). Speed code table (corresponding speed) Speed code 30h 31h 33h 34h 35h 36h 37h 38h Search speed Still 0.1 0.2 0.3 1 2 5 10 33