TEAC IF-SM/DM IF-SM:DM Owner's Manual - Page 15
Generating the pink noise, Setting the surround speaker level, Adjusting the LFE GAIN, Channel delay
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2 - Using the card : MONITOR ALIGNMENT option Generating the pink noise Make sure that your monitoring system is turned on, and adjusted to a reasonable working level. 1 Use the MONITOR / OSC/COM screen to set up the oscillator to produce pink noise. 2 Set the level. If you are working to the SMPTE standard, -20 corresponds to the analog nominal level (the EBU equivalent is -18). 3 Route the oscillator to the surround busses ("Oscillator routing" on page 6). Solo (exclusive solo is set by default when the oscillator is routed this way) the first channel using the solo controls on the OPERATION screen ("Soloing channels" on page 6). Setting the surround speaker level It is also possible to adjust the level of the subsidiary speakers on this MONITOR ALIGNMENT screen using the SURROUND LEVEL control. The speakers adjusted in this way are: LRCS S speaker only Adjusting the LFE GAIN The gain of the LFE channel relative to the other channels can be adjusted using the LFE GAIN control on this screen. This is independent of the surround mode selected. Channel delay To allow for placement, etc. and to prevent phase distortion, etc., channels can be delayed relative to each other. TIP When working with 5.1, start the procedures using the C (dialog) channel. 4 Read the level on the SPL meter. 5 Solo another channel. Read the level on the SPL meter, and adjust the TRIM value shown on the MONITOR ALIGNMENT screen, if necessary, so that it matches the first. Trim levels can be adjusted ±9.9dB in 0.1dB steps. 6 Repeat this process until the levels of all channels, as measured by the SPL meter, are within a few dB of each other. 7 Turn off the oscillator. 5.1 LS, RS 6.1 LS, RS, CS These can be adjusted from 0dB to +10dB in 1dB steps. The adjustment is either 0dB (no adjustment) or +6dB to +10dB in 1dB steps. Channel delays can be set from 0ms to 50.0ms in 0.1ms steps. The exact technique of measurement and correction procedures is a little beyond the scope of this manual. TASCAM IF-SM/DM Owner's Manual 15