Sony Trinitron PVM-14L2MD User manual

© 2004 Sony Corporation
4-096-456-11(1)
Trinitron®Color Video Monitor
Model:
PVM-14L2MD
PVM-20L2MD
Interface Manual for
Programmers
Before operating the unit, please read this manual thoroughly
and retain it for future references.

2
Communication Format.......................................... 2
Command Block Format ........................................ 3
Communication Protocol ........................................ 3
Connections .............................................................. 4
Features of the Command Protocol ....................... 4
Command Table ...................................................... 5
Command Description ............................................ 6
Input Config (21H) ................................................ 6
Selected Offset (28H) ............................................ 6
On Switch Function (29H) .................................... 7
Off Switch Function (2AH)................................... 7
Select Display (2BH)............................................. 7
Select Menu (2CH)................................................ 7
Select RGB Mode (2FH) ....................................... 8
White Balance Data (40H) .................................... 8
Preset Data (41H) .................................................. 9
NV RAM Save (45H).......................................... 10
Preset Adjust (47H) ............................................. 10
Sub Control Data (4CH)...................................... 11
Reset Data (4EH)................................................. 11
Status Sense 1 (60H) ........................................... 12
White Balance Sense (61H) ................................ 12
Preset Sense (62H) .............................................. 12
Sub Control Sense (6BH) .................................... 12
Status Sense 2 (6DH) .......................................... 13
Status Remote (6EH)........................................... 13
Status Reply 1 (70H) ........................................... 13
White Balance Reply (71H) ................................ 14
Preset Reply (72H) .............................................. 14
Sub Control Reply (7BH).................................... 14
Status Reply 2 (7DH) .......................................... 14
Status Remote Reply (7EH) ................................ 15
ACK Reply (04H) ............................................... 15
NAK Reply (05H) ............................................... 15
Contents
Start Bit Stop Bit
“1” (Mark)
Communication Format
Asynchronous, bit serial signal
•Based on RS-232C
•Data signaling rate: 9600 baud/sec
The bit composition is defined as follows:
1 START bit +8 DATA bits + 1 PARITY bit + 1 STOP bit
PARITY: Even
STOP BIT: One bit
Bit 0
(LSB) Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 (MSB) Parity
Bit
“0” (Space)

3
Data communication between the remote control
device and the monitor is performed in accordance
with the following format.
•STX: start of text code value equals 02hex.
•Byte Count
This indicates the number of data bytes (maximum
255 bytes) which have been inserted between this
byte and the Checksum byte.
Values 00hex, 01hex, 02hex are illegal values.
•Destination address:
One byte address value which defines who the
message is for. Value 01hex should be specified.
•Source address:
One byte address value which defines where the
message came from. This is who to reply to with
the message. Value from 41hex to 7Fhex should be
specified.
Command Block Format
STX Byte Count Source Address Command Block Checksum
1 byten bytes1 byte1 byte1 byte1 byte
Destination
Address
•Command Block
This j}signates a particular command. Refer to
“Command Description” for the details.
•Checksum
This value is set so that the bottom eight bits of the
sum of all bytes from the byte count to the
checksum inclusive are zero.
Communication
The remote control device should take the initiative in
communication between the remote controller and the
monitors.
The monitor will carry out one of the following three
actions when it receives the message.
•When the received message is an undefined
message or a communication error occurs then
issue: NAK (05hex)
•When the received command is a question then
issue: Specific Reply + Data
•When the received command is anything else issue:
ACK
The remote control should not issue any other
commands until the response has been received from
the monitor.
The remote control should not leave a gap between
bytes to be transmitted of more than ten milliseconds.
Otherwise the monitor will treat the message as
received in ERROR.
If the remote control unit receives NAK from the
monitor it must wait more than ten milliseconds
before transmitting any more messages.
Communication Protocol

4
Connections
Pin assignment for the RS-232C connector is as
follows.
12345 6789
Signal
Unused
RX
TX
Unused
GND
Unused
RTS
CTS
Unused
Pin number
1
2
3
4
5
6
7
8
9
This protocol provides the following features when
individual monitors are controlled.
•The ability to change the parameters of the monitor
without changing the NV RAM settings. These
parameters include Presets, White Balance and
Input Configuration.
•Switch functions can be changed.
•The ability to remotely make settings and
adjustments normally made with the monitors’s
menu.
•The ability to save current monitors parameters into
the NV RAM for safe keeping.
Note
When there is a signal change or an input change
before saving the changed parameters into the NV
RAM, the changes are discarded and their previous
values are restored.
Features of the Command Protocol

5
CommandTable
Using this protocol, the following commands can be
executed by the monitors.
All values in the following table are hexadecimal.
Input Config
Selected Offset
On Switch Function
Off Switch Function
Select Display
Select Menu
Select RGB Mode
White Balance Data
Preset Data
NV Ram Save
Preset Adjust
Sub Control Data
Reset Data
Status Sense 1
White Balance Sense
Preset Sense
Sub Control Sense
Status Sense 2
Status Remote
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACK
Status Reply 1
White Balance Reply
Preset Reply
Sub Control Reply
Status Reply 2
Status Remote Reply
04
04
04
04
04
04
04
04
04
04
04
04
04
70
71
72
7B
7D
7E
21
28
29
2A
2B
2C
2F
40
41
45
47
4C
4E
60
61
62
6B
6D
6E
Command from Remote Control Return from Monitor
Data
Bytes
0
0
0
0
0
0
0
0
0
0
0
0
0
X
D
D
4
X
1
Specific Command Specific Command
Name Name
Data
Bytes
3
1
1
1
1
1
1
X
X
X
X
X
X
1
1
1
0
1
0
X: varies depending on the number of data items.

6
Selected Offset (28H)
Defines which type of offset is to be applied to
COMPONENT and NTSC signals when these types
of signals are selected for displaying.
The values are specified as follows:
Bits which are not specified here are undefined bits
and their values are always ignored.
1COMPONENT Offset
N10/SMPTE = 01
Betacam 0% = 10
Betacam 7.5% = 11
2NTSC Offset
NTSC 0% = 01
NTSC 7.5% = 10
Command Description
Input Config (21H)
Used to control the current video signal being
displayed on the monitor.
The switches effectively being controlled are Input
Connector, Sync, System, Preset White Balance.
The command has two sections.
1. Information being changed.
Bits which are not specified here are undefined bits
and their values are always ignored.
1Input connector information
2Preset white balance information
The bit is set for the corresponding information to
be applied to the monitor. If no bits are set the
command is effectively ignored.
2. Values to be applied.
The values are specified as follows:
Bits which are not specified here are undefined bits
and their values are always ignored.
1Input connector
LINE A = 000
LINE B = 001
RGB/COMPONENT = 010
OPTION 1 = 011
OPTION 2 = 101
2Preset white balance
9300K = 00
5600K = 01
6500K = 11
User = 10
These values are applied to the current monitor state.
1 2
21
1 2

7
On Switch Function (29H)
This command is used to switch a selected monitor
function. This command has one of two meanings
dependent upon which function is controlled, either
the function is to be put to the on state or the
equivalent of a key press has occurred.
The following table shows the functions that can be
specified and what action is taken.
Select Display (2BH)
Defines the color system display (function to display
the color system of the signal being received in the
lower left corner of the screen) for the monitor and the
language to display text in.
The values are specified as follows:
Bits which are not specified here are undefined bits
and their values are always ignored.
1Selected Language
English = 001
German = 010
French = 011
Italian = 100
Spanish = 101
Japanese = 110
Chinese = 111
2Selected Color System Display
Auto = 01
ON = 10
OFF = 11
Select Menu (2CH)
Defines Chroma Setup items of the monitor.
The values are specified as follows:
Bits which are not specified here are undefined bits
and their values are always ignored.
1Chroma Setup
OFF = 01
ON = 10
Auto Adjust = 11
Off Switch Function (2AH)
Used to toggle some functions to the off state.
The following table shows the functions that can be
specified and what action is taken.
Name of
Function
Remote/Local
Degauss
Underscan
Tally
Overscan
Specific
Command
30
31
33
35
36
Action Taken
Remote applied
Degauss applied
Underscan applied
Tally applied
Overscan applied
Action Taken
Local applied
Underscan removed
Tally removed
Overscan removed
Specific
Command
30
33
35
36
Name of
Function
Remote/Local
Underscan
Tally
Overscan
1 2
1

8
Command Description
Select RGB Mode (2FH)
Defines the RGB Mode selection for the monitor.
The values are specified as follows:
1Video signal when using the OPTION 1 input
connector
RGB = 01
COMPONENT = 10
2Sync signal when using the OPTION 1 input
connector
Internal = 01
External = 10
3Video signal when using the RGB/
COMPONENT input connector
RGB = 01
COMPONENT = 10
4Sync signal when using the RGB/
COMPONENT input connector
Internal = 01
External = 10
White Balance Data (40H)
This command is used to store values set for the white
balance data into the volatile RAM of the monitor.
The command has three components:
1. Range of color temperature values to be saved
2. The Elements of White Balance data being sent
3. The White Balance values to be saved
Each of these elements is described below
1. Range of color temperature values to be saved is
the first byte of the data within the command block
of the message.
The values are specified as follows:
Bits which are not specified here are undefined bits
and their values are always ignored.
1User preset switch
Be sure to specify 1.
1 432
2. The Elements of White Balance data being sent is
the second byte of data contained within the
command block of the message.
Several items of white balance data can be
specified in one message stream. Only those
elements that need to be changed are indicated in
this byte.
The values of data being sent are indicated by a 1
being set in the appropriate bit position. Otherwise
a 0 in the bit position indicates no data to be
changed.
If the value is zero NAK is issued by the monitor.
The values are specified as follows:
Bits which are not specified here are undefined bits
and their values are always ignored.
1Blue Bias Value
2Green Bias Value
3Red Bias Value
4Blue Gain Value
5Green Gain Value
6Red Gain Value
3. The White Balance values to be stored
Each value requires two bytes of data, the first byte
of the pairing is the Most Significant byte.
The pairs of bytes start at the Least Significant Bit
end of the elements of data being sent i.e. if the
data to be saved is blue gain and red bias then the
first pair of white balance value bytes is blue gain
and the last pair is red bias.
If there are not enough or too many data bytes of
white balance data to be saved then NAK is issued
by the monitor.
The values are specified as follows:
Bits which are not specified here are undefined bits
and their values are always ignored.
1
(always 1)
2 31 5 64
White balance value

9
Bits which are not specified here are undefined bits
and their values are always ignored.
1Volume
2Contrast
3Aperture
4Brightness
5Phase
6Chroma
3. The Preset values to be saved
Each value requires two bytes of data, the first byte
of the pairing is the Most Significant byte.
The pairs of bytes start at the Least Significant Bit
end of the elements of data being sent i.e. if the
data to be saved is Phase and Contrast then the first
pair of Preset value bytes is Phase and the last pair
is Contrast.
If there are not enough or too many data bytes of
Preset values to be saved then no values are
changed and NAK is issued by the monitor.
The values are specified as follows:
Bits which are not specified here are undefined bits
and their values are always ignored.
Preset Data (41H)
This command is used to store values set for the
Preset data into the volatile RAM of the monitor.
The values changed by this command will be lost
when the controlled monitor is switched from remote
to local unless they are saved in the NV RAM. The
settings of the front panel controls will be ignored
while the monitor is controlled via this protocol.
The Preset data consists of Chroma, Phase,
Brightness, Aperture, Contrast and Volume.
The command has three components:
1. User setting switch
2. The Elements of Preset data being sent
3. The Preset Values to be saved
Each of these elements is described below.
1. Be sure to set (1) the least significant bit of the first
byte of the data within the command block of the
message.
Bits other than the LSB are undefined bits and
their values are always ignored.
2. The Elements of Preset data being sent is the
second byte of data contained within the command
block of the message.
Several items of Preset data can be specified in one
message stream. Only those elements that need to
be changed are indicated in this byte.
The values of data being sent are indicated by a 1
being set in the appropriate bit position. Otherwise
a 0 in the bit position indicates no data to be
changed.
If the value is zero no values are changed and
NAK is issued by the monitor.
The values are specified as follows:
User setting switch
(always 1) Preset data value
5 641 2 3

10
The values are specified as follows:
Bits which are not specified here are undefined bits
and their values are always ignored.
1Sub control
2User preset
3Chroma setup
Preset Adjust (47H)
This command is used to adjust the User Preset data.
The Preset data consists of Chroma, Phase,
Brightness, Aperture, Contrast and Volume.
The command has two components:
1. The Elements of Preset data being sent
2. The Preset Adjustment Values to be used
Each of these elements is described below.
1. The Elements of Preset data being sent is the first
byte of data contained within the command block.
Several items of Preset data can be specified in one
message stream. Only those elements that need to
be changed are indicated in this byte.
The values of data being sent are indicated by a 1
being set in the appropriate bit position. Otherwise
a zero in the bit position indicates no data to be
changed.
If the value is zero no values are changed and
NAK is issued by the monitor.
The values are specified as follows:
Bits which are not specified here are undefined bits
and their values are always ignored.
1Volume value
2Contrast value
3Aperture value
4Brightness value
5Phase value
6Chroma value
Command Description
NV RAM Save (45H)
This command is used to store data into the NV RAM.
The data is taken from the current volatile memory
locations and stored into the NV RAM.
The command has three portions:
1. Specific area of the NV RAM the data should be
stored in.
2. The Elements of data to be saved.
3. The data items to be saved if necessary.
The following sections explain the meaning behind
each of these portions:
1. Specific area of the NV RAM the data should be
stored in.
Be sure to set (1) the user area bit of the first byte
of the data within the command block of the
message.
Bits which are not specified here are undefined bits
and their values are always ignored.
If the user area bit is cleared (0), data will not be
saved in the NV RAM.
This operation will take approximately ten seconds
to complete. Therefore it is advised that the
remote control device waits this period of time.
2. The Elements of data to be saved are defined in the
second and third bytes of data.
The appropriate bit is set (1) when the data is being
saved, otherwise the bit is cleared (0).
If the value is zero nothing is saved and NAK is
issued by the monitor.
The values are specified as follows:
Bits which are not specified here are undefined bits
and their values are always ignored.
1Adjustable data
2White balance data
3Selectable data (Input Config., Menu)
3. In the fourth byte of the data, set (1) the bits which
correspond to the adjustable data items to be saved
in the NV RAM.
User area bit
(always 1)
1 2 3
1 2 3
162 3 4 5

11
The data bytes start at the Least Significant Bit end
of the elements of data being sent i.e. if the data to
be adjusted is Phase and Contrast then the first
byte of Data value bytes is Phase and the last byte
is Contrast.
If there are not enough or too many data bytes of
data values then no values are changed and NAK is
issued by the monitor.
Reset Data (4EH)
This command is used to restore data in the monitor to
the factory defaults.
The command has two portions:
1. The Elements of data to be restored
2. The data items to be restored
The following sections explain the meaning behind
each of these portions:
1. The Elements of data to be restored.
The values are specified as follows:
Bits which are not specified here are undefined bits
and their values are always ignored.
1Sub Control data
2User Preset data
3White Balance (user) data
The appropriate bit is set (1) when the data is to be
restored, otherwise the bit is cleared (0).
If the value is zero nothing is restored and NAK is
issued by the monitor.
This operation will take approximately ten seconds
to complete. Therefore it is advised that the remote
control device waits this period of time.
123
2. The Preset Adjustment values to be used
Each value requires two bytes of data, the first byte
of the pairing is the always ignored byte. The
second byte is a signed value, this allows for +/–
adjustments.
The pairs of bytes start at the Least Significant Bit
end of the elements of data being sent i.e. if the
data to be adjusted is Phase and Contrast then the
first pair of Preset value bytes is Phase and the last
pair is Contrast.
If there are not enough or too many data bytes of
Preset values then no values are changed and NAK
is issued by the monitor.
Sub Control Data (4CH)
This command is used to specify the Sub Control data
of the monitor.
The command has two components:
1. The Elements of Sub Control data being sent
2. The Data values to be used
Each of these elements is described below
1. The Elements of Sub Control data being sent is the
first byte of data contained within the command
block.
Several items of Sub Control data can be specified
in one message stream. Only those elements that
need to be changed are indicated in this byte.
The values of data being sent are indicated by a 1
being set in the appropriate bit position. Otherwise
a 0 in the bit position indicates no data to be
changed.
If the value is zero no values are changed and
NAK is issued by the monitor.
The values are specified as follows:
Bits which are not specified here are undefined bits
and their values are always ignored.
1Contrast value
2Brightness value
3Phase value
4Chroma value
2. The Data values to be used
Each value is one byte long within the range of 0
to 100 for Contrast/Chroma and -50 to 50 for
Brightness/Phase.
12 3 4

12
2. The data items to be restored are defined in the
second, third and/or forth bytes of data depending
on which elements of data are specified in the first
byte.
These bytes are located at the end of the message
and are used to set values for each specified
element of data (White Balance (user), User Preset
or Sub Control) as described in the table below.
The bytes are applied from White Balance (user)
data towards Sub Control data.
The values are specified as follows:
Status Sense 1 (60H)
This command is used to sense the status of the
monitor’s current operation.
The remote control device can specify which item of
data should be in the reply. The items being asked for
are detailed in one data byte.
The requested items are specified as follows:
1Selected Offset
2Current Input Configuration
The monitor will reply with the Status Reply (70H)
message.
White Balance data request
(always 1)
User Preset deta request
(always 1)
White Balance Sense (61H)
This command is used to obtain the White Balance
data stored in one of the registers of the monitor.
The White Balance data request bit of the first byte of
data must be set (1). Bits other than that are
undefined bits and their values are always ignored.
The monitor will reply with the White Balance Reply
(71H) message.
Preset Sense (62H)
This command is used to obtain the Preset data stored
in one of the registers of the monitor.
The least significant bit of the first byte of data must
be set (1). Bits other than this are undefined bits and
their values are always ignored.
The monitor will reply with the Preset Reply message
(72H).
Sub Control Sense (6BH)
This command is used to obtain the following Sub
Control data.
•Brightness value
•Chroma value
•Phase value
•Contrast value
The monitor will reply with the Sub Control Reply
(7BH) message.
2
Command Description
Sub Control
(fourth byte)
(Ignored)
(Ignored)
(Ignored)
Contrast
(Ignored)
Brightness
Phase
Chroma
62 3 4 51 87
User Preset
(third byte)
Volume
(Ignored)
(Ignored)
Contrast
Aperture
Brightness
Phase
Chroma
White Balance
(second byte)
(Ignored)
Blue bias
Green bias
Red bias
(Ignored)
Blue gain
Green gain
Red gain
1
2
3
4
5
6
7
8
1

13
Status Reply 1 (70H)
This message is used to reply to the status request
command.
The reply consists of two portions
1. Elements of reply data
2. Reply data
Each of these portions is described in the following
sections:
1. Elements of reply data, first byte of the data reply
The bits corresponding to the elements of reply
data are set (1).
The values are specified as follows:
Bits which are not specified here are undefined
bits.
1Selected Offset
2Current Input Configuration data
2. Reply data, which will consist of several bytes.
The reply data will start at the Least Significant Bit
of the data required i.e. Current Input
Configuration first.
Each section of the data reply requires the
following details.
Current Input Configuration: two bytes; the byte
order is the same as that specified in the second
section under the command Input Config (21H).
Selected Offset: One byte of data; see command
Selected Offset (28H) for details.
2
1
Status Sense 2 (6DH)
This command is used to obtain the lesser details of
status of the monitor.
The remote control device can specify which item of
data should be in the reply. The items being asked for
are detailed in one data byte.
Set (1) the bits corresponding to the data items being
asked for.
The requested items are specified as follows:
Bits which are not specified here are undefined bits
and their values are always ignored.
1Switch Condition 2
2RGB Mode
3Menu
4Display
The monitor will reply with the Status Sense 2 Reply
(7DH) message.
Status Remote (6EH)
This command is used to obtain the current status of
the monitor’s remote control ability.
The monitor will reply with the Status Remote Reply
(7EH) message.
12 3 4

14
Command Description
Bits which are not specified here are undefined
bits.
2. Reply data
The order of the data reply is as follows:
•Chroma value
•Phase value
•Brightness value
•Contrast value
•Aperture value
•Volume value
The byte order for each set of data is highest value
byte first.
The data format is the same as that specified in the
third section under the command Preset Data
(41H).
Sub Control Reply (7BH)
This reply informs the remote control of the values
held by the Sub Control data of the monitor.
The order of the data reply is as follows:
•Brightness value
•Chroma value
•Phase value
•Contrast value
Each value is one byte long.
The data format is the same as that specified in the
second section under the command Sub Control Data
(4CH).
Status Reply 2 (7DH)
This reply provides the lesser details of status of the
monitor.
The reply consists of two portions.
1. Elements of reply data
2. Reply data
Each of these portions is described in the following
sections:
White Balance Reply (71H)
This message is used to send the required White
Balance data to the remote controller.
The reply consists of two portions
1. Specification of White Balance data
2. Reply data
Each of these portions is described in the following
sections:
1. Specification of White Balance data, first byte of
the data reply
The White Balance data reply bit is set (1).
Bits which are not specified here are undefined
bits.
2. Reply data
The order of the data reply is as follows:
•Red Gain
•Green Gain
•Blue Gain
•Red Bias
•Green Bias
•Blue Bias
The byte order for each set of data is highest value
byte first.
The data format is the same as that specified in the
third section under the command White Balance
Data (40H).
Preset Reply (72H)
The Preset data stored in the register of the monitor is
sent to the remote controller.
The reply consists of two portions
1. Specification of Preset data
2. Reply data
Each of these portions is described in the following
sections:
1. Specification of Preset data, first byte of the data
reply
The least significant bit is set (1).
White Balance data
reply bit
Preset data reply bit

15
The value being supplied are specified as follows:
Bits which are not specified here are undefined bits.
1Control applied
Remote mode = 01
Local mode = 10
2Type of remote control ready to apply
This value should always be 10.
ACK Reply (04H)
This shows that the command to the monitor was
correctly received and executed.
NAK Reply (05H)
Used to specify which type of problem has been found
with the serial communication port by the monitor.
The values are specified as follows:
Bits which are not specified here are undefined bits
and their values are always set to 0.
1Timeout Error: time between bytes should be
less than 10 milliseconds (= 0) otherwise an error
occurs (inter byte time > 10 milliseconds = 1)
2Framing error on received message
No error = 0
Received message had a framing error = 1
3Overrun error on received message
No error = 0
Received message had an overrun error = 1
4Parity error on received message
No error = 0
Received message had a parity error = 1
5Checksum error on received message
No error = 0
Received message had a checksum error = 1
6Undefined message
Received message was understood = 0
Received message was not understood = 1
1. Elements of reply data, first byte of the data reply
The bits corresponding to the elements of reply
data are set (1).
The values are specified as follows:
Bits which are not specified here are undefined
bits.
1Switch Condition 2
2RGB Mode
3Menu
4Display
2. Reply data
The data of the reply will start at the Display value
(if this data was requested) and finish at the Switch
Condition 2 value.
Each section of the data reply requires the
following details
Display: one byte; the byte value is the same as
that specified under the command Select
Display (2BH)
Menu: one byte; the byte value is either ON or
OFF as specified under the command Select
Menu (2CH)
RGB Mode: one byte; the byte value is the same
as that specified under the command Select
RGB Mode (2FH)
Switch Condition 2: one byte; the values are
specified as follows:
Bits which are not specified here are undefined
bits.
The appropriate bit is set (1) when the item is ON
and cleared (0) when it is OFF.
1Tally
2Overscan
3Underscan
Status Remote Reply (7EH)
This reply informs the remote controller of the current
remote status of the monitor. The monitor should
always reply to questions independent of the actual
remote state.
12 3 4
2 3
1
12
162 3 4 5

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