Panasonic Digital Hd Video Cassette Recorder Ajhd1800 Operating Instructions

131
RS-232C interface
The VTR can be operated by commands when the RS-232C
interface is used.  (Refer to the command tables on page
134.)
_Condition for acknowledging commands 
from RS-232C interface
Setup menu item No.204
(RS232C SEL)ON
If the above condition is not met, 
[ACK]+[STX]ER001[EXT] is returned to the external 
component.  Whether [ACK] is returned depends on 
the setting which has been selected for setup menu 
item No.209 (RETURN ACK).
Hardware specifications
External interface...

132
RS-232C interface(continued)
Software specifications (protocol)
1.Communication parameters
The underlining (__) denotes the factory setting mode.
The settings can be changed in the following Setup Menu.
2.Send format 
[controller (PC) > VTR]
The following responses are for command instructions.
Multiple responses may be made if necessary.
_Data format
20H

133
RS-232C interface(continued)
3.Return format 
 controller (PC)>
The following responses are made to the commands.  If
necessary, more than one response is made.
_When the communication has ended suc-
cessfully
1.The receive completion message is returned.
[ACK]
  06h
2.The execution completion message is returned.
[command]:
This is the message (data) which is returned or the
execution completion message identifier.
[data]:
This is the data to be returned.  It can be omitted.
example:
Send command...

134
RS-232C interface(continued)
5.Command table
_Commands relating to operation control
 
zAs the return (completion) message, [ACK] is returned 
when data is received, and only the execution message 
which is subsequently returned is listed in the table.
zIf a command not listed in the table is received, ER001 
(invalid command) is returned after [ACK].
VTR 
operationSend commandReturn (completion) 
message
STOP[STX] OSP [ETX]áà[STX] OSP [ETX]
This command is for stopping the tape transport.  The...

135
RS-232C interface(continued)
_Commands relating to inquiries
 
zIn terms of the return (completion) message, [ACK] is 
returned when data is received, and only the execution 
message which is subsequently returned is listed in the 
table.
zIn the case of commands not listed in the table below, 
ER001 (invalid command) is returned after [ACK].
VTR 
operationSend commandReturn (completion) 
message
CTL/TC 
DATA 
REQUEST[STX] QCD [ETX]áà[STX] CD data [ETX]
This command is for inquiring about the...

136
RS-232C interface(continued)
_Microsoft QuickBASIC sample program
CLS
STX$ = CHR$(&H2): ETX$ = CHR$ (&H3): NAK$ = CHR$(15): ACK$ = CHR$(&H6)
PRINT *** RS-232C COMMUNICATION SAMPLE PROGRAM ***
PRINT Type Command QUIT to quit.
PRINT
REM *** Communication Port Initial & Open ***
REM Port 1,9600Bps,No parity,8 bit data,1 stop bit
OPEN COM1:9600,N,8,1 FOR RANDOM AS #1 LEN = 256
REM *** Input Command & Send Command ***
SendCmd:
INPUT Input Command =; SEND$
IF SEND$ = QUIT THEN GOTO ProgEnd
PRINT #1, STX$ +...

137
Connector signals
RS-422A REMOTE(9P)
VIDEO IN
HD SERIAL IN 
(DIGITAL)BNC k 1, active-through (BNC k 1)
HD/SD REF INBNC k 2, loop-through, 75h termination 
switch provided
SD SERIAL IN 
(DIGITAL)BNC k 1, active-through (BNC k 1) 
VIDEO OUT
HD SERIAL OUT 
(DIGITAL)BNC k 4
SD SERIAL OUT
(DIGITAL)BNC k 2
ANALOG 
COMPOSITE 
OUTBNC k 3
AUDIO IN
AUDIO IN 
(DIGITAL)BNC  k  4 (CH1/CH2, CH3/CH4, CH5/CH6, 
CH7/CH8), AES/EBU format
AUDIO IN 
(ANALOG)XLR k 4(CH1, CH2, CH3, CH4)
HD SERIAL IN 
(DIGITAL)BNC k 1,...

138
Connector signals(continued)
PARALLEL REMOTE (50P)
Refer to 50P IN/OUT ASSIGN on the function menu (page
74) for the connection pin signals.
EMERGENCY EJECT
Procedure to ejecting the tape manually in an emergency
If the cassette tape fails to be ejected even when the EJECT button is pressed, it can be ejected as follows.
zFollow the steps below after making absolutely sure that the unit’s power has been turned off.
1Remove the top panel.
2Use a Phillips-head screwdriver to push in the red plastic...

139
Specifications
[GENERAL]
Operating ambient temperature: 
5 xC to 40 xC (41 xF to 104 xF)
Operating ambient humidity: 
10% to 80% (no condensation)
Storage temperature:
–20°C to 60°C (–4°F to 140°F)
Dimensions (W k H k D): 
424 mm (max. 435.4 mm) a 175.2 mm a 417 mm
16-3/4 inches (max. 17-3/16 inches) a 6-15/16 inches a 
16-7/16 inches
(not including supporting feet, jacks and connectors, JOG dial 
and fan)
Weight: 
19.5 kg (43.0 lb)
Recording format: 
DVCPRO HD-LP
Video signals recorded: 
1080i (50...

140
Specifications (continued)
[VIDEO] (continued)
Video signal adjustment ranges
zComponent style
HD/SD SDI, composite output Y gain: 
–   to +3 dB
HD/SD SDI, composite output P
B gain: 
–   to +3 dB
HD/SD SDI, composite output P
R gain: 
–   to +3 dB
HD/SD SDI, composite output Y black level: 
d10%
zComposite style
HD/SD SDI, composite output video gain:  
–   to +6 dB
HD/SD SDI, composite output chroma gain:  
–   to +3 dB
HD/SD SDI, composite output chroma phase *
1:  
d30x
HD/SD SDI, composite...