Contemporary Research 232-MTA Manual download pdf (Page 10)

Contemporary Research 10 232-MTA Mono TV Tuner

General RS-232 Commands

VU Ramp volume up No response

VD Ramp volume down No response

VL Ramps volume to level (0 – 63) No response

VX Volume Mute off Restores audio volume to previous level (full)

VV Stop volume ramp No response

VT Toggle Volume Mute Alternates audio mute on and off

VM Volume Mute on

Example: ‘

>VM’

Turns off audio outputs

Mutes audio outputs

S0= Set tune mode 0=CATV

1=Broadcast

2=HRC

3=IRC

S4= Set front panel lockout mode 0=None

1=Channel

2=Select

3=Channel & Select

4=Mute A/V

5=Channel &Mute A/V

6=Select & Mute A/V

7=All

S5= Power-up volume 0=restore to previous level (always full)

1= Restore to full

S7= Set audio mode 0=Mono (fixed)

S8= Set bass gain level (8) 8= 0 db (fixed)

S9= Set treble gain level (4) 4= 0 db (fixed)

SS Request Front Panel status Unit sends “S” Front Panel status string

ST Request Channel status

Example:

‘>ST’

Unit sends “T” Channel/Source status string

Returns Channel/Source status response string

SV Request A/V status Unit sends “V” Audio status string

A carriage return is required at the end of each command and is assumed in all examples. The ‘=’ sign for

parameters may be omitted if desired, though it is helpful for clarity in checking programming.

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Contemporary Research 232-MTA Manual Page 10