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Technical Note TN62
1st September 2014
G65 RS232 Interface
The RS232 interface for the G65 can be operated from any terminal which operates at 9600 baud with 1
start bit, 1 stop bit and 0 parity. Commands take the form of two ASCII characters and in some cases,
followed by a signed argument (‘nn’ below). All commands are echoed by the G65. A carriage return
character will execute the command and backspace is also implemented. Once a command is
executed, the G65 will return 20 characters.
The following table lists the commands available and shows examples of the messages returned. These
messages will always correspond to those displayed on the front panel.
Source Commands
CD Selects CD source CD Trifield 65
RD Selects Radio Radio Music 65
DV Selects DVD DVD Cinema 65
AX Selects Aux Aux Discrete 65
DC Selects Disc Disc Music 65
TA Selects Tape Tape Music 65
TV Selects TV TV TV Logic 65
CB Selects Cable Cable Pro Logic 65
SA Selects Satellite Sat Trifield 65
V1 Selects VCR1 VCR1 Pro Logic 65
V2 Selects VCR2 VCR2 Pro Logic 65
GA Selects Game Game THX Cinema 65
COnn Select Copy Source1 Copy Cable
Volume Commands
VP Volume + CD Trifield 66
VM Volume - CD Trifield 64
VNnn Go to Volume (1-99) CD Trifield 87
MU Mute
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General Commands
SB Standby Standby
mr Menu Right CD Centre +0dB
ml Menu Left CD Balance <0>
mp Menu Up CD Balance <1
mm Menu Down CD Balance 1>
PNnn Go to Preset CD Trifield 65
DS Go to next Preset CD Trifield
Additional Commands – Correspond to MSR+ Keys
PL Play ME Menu
ST Stop RT Return
PS Pause TM Top Menu
RP Repeat NP Next Page
NE Next PP Previous Page
PR Previous MP Menu Up
DI Display MM Menu Down
SR Store ML Menu Left
CL Clear MR Menu Right
DP Decimal Point cl Function Clear
FF Fast Forward sr Function Store
FB Fast Back di Function Display
N0 – N9 Number Keys mu Function Mute
OP Open ds Function DSP
MO Mono ff Function Fast Forward
SL Slow fb Function Fast Back
AU Audio vp Function Volume Up
SU Subtitle On/Off vm Function Volume Down
su Subtitle choice RC Record
rp AB Repeat BA Band
AB AB Repeat AN Angle
PH Phase OS OSD
TB T (MSR3) RE Red Buton
#B # button GR Green Button
CH Chapter (MSR3) YE Yellow Button
SE Setup BL Blue Button
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1. Copy Source Argument
CO0 = CD CO8 = DVD
CO1 = Radio CO9 = VCR1
CO2 = Aux CO10 = VCR2
CO3 = TV CO11 = Game
CO4 = Tape CO12 = Source
CO5 = Sat CO13 = Mute
CO6 = Disc CO14 = Off
CO7 = Cable
2. 2. Go to Preset Argument
PN0 = Direct PN14 = Discrete
PN1 = Music PN15 = Cinema
PN2 = Trifield PN16 = PLIIx Mus6
PN3 = Ambisonics PN17 = PLIIx Mov6
PN4 = Super PN18 = THX
PN5 = Stereo PN19 = THX EX
PN6 = Music Logic PN20 = THX Ultra II Cinema
PN9 = Mono PN21 = THX Music
PN10 = TV Logic
PN11 = PLIIx Music PN24 – 33 select User defined Presets
PN12 = PLIIx Movie
PN13 = PLIIx THX
Check Status Commands
The following commands will return the equivalent strings from the G65:
CS01 = Current Surround Mode and volume number (0 to 99)
CS02 = Current Surround Mode and volume on dB scale (-86 to +12)
CS03 = Current digital stream (PCM etc)
CS04 = Tuning info (only when current source uses internal tuner)
CS05 = FIFO diagnostics
CS06 = DSP decode diagnostics
CS07 = Set-up diagnostics
CS08 = Source diagnostics
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G65 RS232 Menu Commands
These commands are in addition to the existing menu commands, ml, mr, mm, mp.
The command string ‘APnnxx’ will set the value of menu nn (a hexadecimal number) to value xx (also
hexadecimal, two’s complement). The accompanying table lists the acceptable values for nn & xx.
E.g.
AP0000
Sets the preset to Direct.
Some menus work in half unit steps
e.g.
AP0102 … sets the treble to +1dB.
AP0103 … sets the treble to +1.5dB
Entering invalid numbers will return an “Error” message.
Menus are not always available for adjustment; an error message will be returned if the menu cannot be
adjusted.
e.g.
Trying to adjust the Centre delay in Direct mode, AP0A03, will return an error.
Some adjustments will require the user to take note of what DSP mode the unit is in, the right hand
column in the table shows the special cases where this is true.
e.g.
Trying to adjust the rear delay could be either, AP0604, AP1004 or AP2C04 depending on whether the
product is in Music mode, Logic mode or 5.1 mode.
Reading current status.
The current status of the menus can also be read. The command string APnnT will test the value of
menu ‘nn’, where nn is a number from the table as before. The product will then return a string on
RS232 (no front panel display) indicating the menu being tested and the value. Menus that have an
on/off setting will return ‘00’ for off and ‘01’ for on.
e.g.
AP0204 … sets the Bass to +2dB.
AP02T … asks for current status of the Bass menu,
the product returns;
TM0204
If an invalid menu number is used the product will return an error as before.
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Menu
Hex
Steps
Min.
hex
Max.
hex
Restrictions
Preset
00 1 0
00
see above
- Treble
01
0.5dB
-10dB
EC
+10dB
14 Bass
02
0.5dB
-5dB
F6
+5dB
0A Phase
03 - Off
00
On
01 LR balance
04 - 10L
F6
10R
0A
Lipsync
1D
0.5ms
0ms
00
30ms
3C
Products without Room Correction
Lipsync
4C
0.5ms
0ms
00
85ms
AA
Products with Room Correction
Rear level
05 - 30R
E2
10F
0A Centre level
09
0.5dB
-3dB
FA
3dB
06
Centre delay
0A
0.5ms
-2.5ms
FB
5ms
0A Centre EQ
0B - 0
00 3 03 Centre Elevation
4F - Off
00
Max
03
G65 & 861 with SL outputs only.
Rear delay
06
0.5ms
0ms
00
30ms
3C
Music modes only
Rear delay
2C
0.5ms
0ms
00
15ms
1E
5.1 modes only
Rear delay
44
0.5ms
10ms
14
25ms
32
PLII(x) movie & PLII(x) THX
Rear filter
07 - 0
00 3 03
Music modes only
Rear filter
12 - 0
00 3 03
Ambisonics only
Side level
19
1dB
-30dB
E2
+10dB
0A
Music modes only
Side delay
1A
0.5ms
0ms
00
30ms
3C
Music modes only
Side delay
2D
0.5ms
0ms
00
15ms
1E
5.1 modes only
Side delay
45
0.5ms
10ms
14
25ms
32
PLII movie & PLII THX
Side filter
16 - 0
00 3 03
Ambisonics only
Side filter
1B - 0
00 3 03
Music modes only
Axis control
3C
1dB
-2
FE
+3
03
If any DSP speakers
HS out
37 - Off
00
On
01 EBA
50 - Off
00
On
01
G65 & 861 SL only.
Width
0E
0.1 0 00
1.5
0F
Trifield only
Width
0F
0.1 0 00
1.0
0A
Super Stereo only
PLII Width
40 - 0
00 7 07
PLI(x) Music only
Dimension
3D - 0
00 6 06
PLII(x) Music only
Panorama
3E - Off
00
On
01
PLII(x) Music only
Prologic legacy
3F - Off
00
On
01
PLII(x) Movie & PLII(x) THX
Auto THX-EX
3A - 0ff
00
On
01
THX, UltraII & THX Music only
Party mode
28 - Off
00
On
01
Mono only
Academy filter
13 - 0ff
00
0n
01
Mono only
No. of surrounds
1E - 0
00 2 02
Music modes only
No. of surrounds
43 - 0
00 2 02
Logic modes only
No. of surrounds
24 - 0
00 2 02
5.1 modes only
LFE level
4A
dB
-18dB
01
+10dB
1D
5.1 modes only
Compression
29 - 0
00 5 05
Dolby Digital only
Brightness
2F - 0
00
15
0F Position
11 - M
00 A 06
Ambisonics only
Roll
14 - 0
00 3 03
TV logic only
Yaw
15 - 0
00 3 03
TV logic only
Mono input
0D - 0
00 3 03
Mono only
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