Larson Davis Spartan 821 - 2.2 Powering the Meter

Spartan 821/721 Manual Powering the Meter 10
Step 1. Look for an engraved line along the length
of the preamplifier. When correctly
assembled, the engraved line aligns with
the top of the preamp release button
(Figure 2-2).
Step 2. With the marks on both pieces aligned,
insert the 5-pin connector of the
preamplifier into the preamp housing and
beyond the preamp seal until it latches with
a small audible click.
To Disconnect the Preamplifier:
Press and hold the preamp release button, then pull the preamplifier assembly from the
meter.
2.2 Powering the Meter
The meter is engineered to be power-conscious. Indications, status details, and other
power-related details appear throughout the meter interface. This simplifies the task of
monitoring power while you work.
In addition, the meter provides power-saving settings also described in this section.
The meter will not allow measurements to begin until the system is stabilized.
In this section:
• 2.2.1 Powering On, Off, or Sleeping the Screen
• 2.2.2 LED Status Light
• 2.2.3 Using Battery Power
• 2.2.4 Charging Batteries by External Power
2.2.1 Powering On, Off, or Sleeping the Screen
Power On: Press and hold the Power button for 1 to 2 seconds to power on the meter.
Power indications for the meter are located on the Live tab, which is the first screen you
see after powering on.
Power Off: Press and hold the Power button for 4 to 5 seconds to power off the meter. The
display will show a countdown.
When not actively using the meter, quick press the power button to put the screen to sleep.
Quick press the power button again to wake the screen. The display will automatically
sleep based on the Display Sleep Time setting.
FIGURE 2-2
Alignment of
preamp
engraving
Preamp
release
button