Teledyne 804A User Manual page 56

804 Series Video Test Generator – User Guide
AASI 1 // selects the analog audio output
ALLU // activates analog audio
3. Touch select the PCM Sine Wave on the Audio Pattern menu.
The following screen appears:
4. Select the audio parameters:

Touch select the values for the Bits per Sample using the three buttons provided. (16 bits is selected in the example
above.)

Touch select the Sampling Rate by incrementing the associated arrows adjacent to the current value. (Refer to the
screen shot above which shows 48 kHz selected.)

Touch select the Channels by incrementing the associated arrows adjacent to the current value. (Refer to the screen
shot above which shows 2.0 selected.)

Specify the Level by touch selecting the associated increment or decrement buttons showing +3dB and -3dB. (Refer
to the screen shot above which shows the level at -3dB.) Repeat for each channel. You can specify the level for each
channel individually.

Specify the Frequency of the sine wave by touch selecting the associated increment or decrement buttons. There
are four buttons on the left of the current value. (1.00 kHz is shown selected in the screen shot above) The four
buttons provide a variety of increment and decrement values for convenience. Repeat for each channel. You can
specify the frequency for each channel individually.

Specify which channels you want to mute by touch selecting a channel and then touch selecting the Mute activation
button. You can only select one channel at a time. Note that only the active channels (the ones specified in
Channels will be selectable. (Refer to the screen shot above.)
Alternatively, to select audio parameters through the command line:
NBPA 24 // selects the number of bits per sample
ARAT 48000 // selects the sampling rate to 48kHz
SRAT 1000 // sets the sine wave frequency of the audio
SAMP -9 // sets the amplitude of the PCM sine wave audio
ALLU // activates analog audio parameter settings
Page 56 Revision B3