Tektronix 070-8811-08 - Manual (Page 35)

Operating Basics
20 764 Digital Audio Monitor User Manual
Figure 16: The sum and difference display modes
(3) Peak Program level. The Peak Program level is usually the maxi-
mum permissible level for audio program material. The default
Peak Program level is –8 dBFS; you may set it to the integer val-
ue between 0 (FS) and –30 dBFS that is appropriate to your par-
ticular needs. The diamond-shaped Peak Program level scale
markers will be red on an (optional) external color display; if the
audio program exceeds this level, the portion of the meter bar
above the level will also be red.
(4) Test Level. Test level is also known as Reference level or Line-up
level. The diamond-shaped Test level marker will be yellow on
an external color display, and the part of the meter bar between
this level and Peak Program level will also be yellow. The default
test level is –18 dBFS; it may be set to any integer between 0 and
–30 dBFS.
(5) Variable scale. The scale range and offset may be adjusted through
the METER SCALE:EXPAND and :OFFSET buttons. This
feature lets you more closely monitor program levels in a selected
portion of the meter, such as immediately above and below the
Test level. To adjust either the range or offset, press the appropri-
ate button, then turn the multi-function knob. Press METER
SCALE:NORMAL to restore the default meter scale.
H The normal range is 70 dB (0 dBFS to –70 dBFS); custom
range may be as little as 10 dB or as great as 90 dB.