Owner`s manual

Note 11 – Zone Min/Max-Volume Levels command (*PW,9/10):
Min-vol has priority over mute-vol and initial-vol, and is the absolute min volume zone will reach. If min-vol incorrectly set
above max-vol, then min-vol will be presumed to be zero. Max-vol has priority over all other settings, and is the absolute
max volume zone will reach.
Note 12 – Zone Initial-Volume Levels command (*PW,9/12):
Min-Vol and Max-Vol should be set before setting Initial-Volumes. If initial-vol incorrectly set above max-vol, then initial-
vol will be presumed to be max-vol. If initial-vol incorrectly set below min-vol, then initial-vol will be presumed to be min-
vol. Initial-vol levels include both left and right levels, and should be set after performing a balance adjustment on a zone.
Note 13 – Zone Mute-Volume Level and Audio-Mode command (*PW,9/14):
Min-Vol and Max-Vol should be set before setting Mute-Volume. Mute always acts upon both L&R channels, even though
L&R volume levels may differ; balance is preserved when zone is unmuted. Mute-vol is a ceiling, not an absolute level. If
mute-vol set above min-vol, zone volume levels may go below mute-vol level. When muting, volumes above mute-vol will
lower to mute-vol level, but volumes below mute-vol will not change. If mute-vol incorrectly set above max-vol, then mute-
vol will be presumed to be max-vol. If mute-vol incorrectly set below min-vol, then mute-vol will be presumed to be min-vol.
Audio-Mode byte mod is a collection of bits, of which only bits 0 and 1 are currently defined:
Bit 0 (lsb) is MODE_STEREO_BIT: 1 = stereo (normal) or 0 = mono.
Bit 1 is MODE_PREVIOUS_VOL_BIT: 1 = turn-on-at-prev-vol, 0 = turn-on-at-initial-vol (normal).
The factory setting for mod is 1, which is stereo and turn-on-at-initial-vol.
To choose the appropriate mod, you need to set the bits appropriately:
Definition mod-bit bit-value 1=on add bit-values
MODE_STEREO_BIT bit-0 1 1 (lsb) 1
MODE_PREVIOUS_VOL_BIT bit-1 2 1 2
(unused) bit-2 4 0 0
(unused) bit-3 8 0 0
(unused) bit-4 16 0 0
(unused) bit-5 32 0 0
(unused) bit-6 64 0 0
(unused) bit-7 128 0 (msb) 0
= 10011011 = 3 = mod
Therefore, when mod = 3, the zone will be stereo, and will turn on at previous volume.
Note 14 – Zone Bass/Treble Levels command (*PW,9/16):
Bass and Treble levels are technically part of the zone configuration (*PW cmds), but also have analogous control (*CW)
commands, for normal adjustment. The *CW commands are to be used in the user program, and also update an active zone
with the new bass/treble levels. The *PW commands are used for simply changing the switcher configuration, and changes
will not be noticed until the zone is turned off and then back on.
Note 15 – Zone Taper Delays command (*PW,9/18):
Taper delays are inserted between each 2-dB volume step to provide a pleasant transition when muting/unmuting, routing
sources, or when using the taper option with absolute volume commands. It generally sounds better to have a longer taper-up
delay than taper-down delay.
Note 16 –Volume Levels (vvl, vvr, vra) are 2-dB/increment (except for 0 = -80dB):
35 +6 dB 26 -12 dB 17 -30 dB 8 -48 dB
34 +4 dB 25 -14 dB 16 -32 dB 7 -50 dB
33 +2 dB 24 -16 dB 15 -34 dB 6 -52 dB
32 0 dB (pass) 23 -18 dB 14 -36 dB 5 -54 dB
31 -2 dB 22 -20 dB 13 -38 dB 4 -56 dB
30 -4 dB 21 -22 dB 12 -40 dB 3 -58 dB
29 -6 dB 20 -24 dB 11 -42 dB 2 -60 dB
28 -8 dB 19 -26 dB 10 -44 dB 1 -62 dB
27 -10 dB 18 -28 dB 9 -46 dB 0 -80 dB
Lattis Matrix Switcher 38 Software Version 7.3.0.0