SRS Labs SR510 - Manual (Page 16)

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whenever any of the PHASE keys are pressed.
The phase ranges from -180 degrees to +180
degrees and is the phase delay from the reference
input signal.
Power
This is the instrument's POWER switch. When the
power is turned off, the front panel settings are
retained so that the instrument will return to the
same settings when the power is next turned on.
When the power is turned on, the OUTPUT
DIGITAL DISPLAY will show the SERIAL
NUMBER of the instrument and REFERENCE
DISPLAY shows the model number of the
instrument. All displays return to normal after 2
seconds.
Local and Remote
When the instrument is programmed via the
computer interface to be in the REMOTE state
WITHOUT LOCK-OUT, the DISPLAY UP key will
return the instrument to LOCAL front panel
control. If the instrument is in the REMOTE WITH
LOCK-OUT state, no front panel key will return the
status to LOCAL. In this case, a RETURN TO
LOCAL command must be sent over the computer
interface or the power must be turned off and back
on.
Defaults
If the REL key is held down when the POWER is
turned on, the instrument settings will be set to the
defaults shown below instead of the settings in
effect when the power was turned off.
Parameter Setting
BANDPASS OUT
LINE OUT
LINE X 2 OUT
SENSITIVITY 500 mV
DYN RES LOW
DISPLAY X
EXPAND OFF
REL OFF
OFFSET OFF (value=0)
PRE TIME CONSTANT 100 mS
POST TIME CONSTANT 0.1 S
ENBW
1 Hz
REFERENCE MODE f
TRIGGER MODE SYMMETRIC
REFERENCE DISPLAY FREQUENCY
PHASE 0°
Whenever default values are used at power up,
the red ERR LED will turn on for about 3 seconds.
If the ERR LED is on when the instrument is
powered on without the LOCAL key down, then
the instrument is ignoring the retained settings.
This can be due to a low battery.