Vectronics SWR-584C - Manual (Page 6)

SWR-584C Instruction Manual HF/VHF/220MHz SWR Analyzer
6
Important Warning:
Never store your unit more than a month with batteries installed.
Also, never ship with batteries installed or swap cells with the power switch "On"!
2.4 Low Voltage Alert: If the batteries (or external DC supply) drops below 11 Volts, a
flashing warning will appear on-screen (see below):
Tapping the Mode button one time disables the warning and allows you to continue testing, but
measurements made at low voltage may not be reliable.
If possible, plug in an external power
source or discontinue testing until batteries are replaced or recharged.
2.5 Sleep Mode (Standby): The SWR-584C normally draws around 220 mA, consumed
mostly by the stimulus generator's amplifier stages. To extend battery life, your unit features a
built-in standby function called Sleep Mode. Sleep Mode shuts down signal generation and
reduces current drain to under 15 mA during periods of analyzer inactivity.
The analyzer's processor monitors activity by sensing activation of the Mode switch and by
looking for any change in the Tune control greater than 50 kHz. If neither event occurs during
a three-minute interval, the processor registers "inactivity" and switches into standby or Sleep
mode. A blinking SLP message on the display signals shutdown (see below):
2.6 Wake Up (Cancel SLP): To pull the unit out of SLP (standby), momentarily press either
the Mode or Gate button and resume normal operation.
2.6 Disable SLP: You may disable the SLP function manually if it interrupts your work. To
disable it, turn the analyzer Off, then turn it On again while holding down the Mode button.
Continue holding Mode until the copyright message appears on the screen, then release it.
When SLP is defeated, the message shown below will appear:
Note that SLP is a default function in the SWR-584C -- it resets automatically each time you
power up unless you hold down the Mode key to defeat it. To restore the SLP function at any
time during an ongoing test session, simply turn the analyzer Off and then reboot it On again.
2.7 Powering-up (Boot) Sequence: To turn the analyzer On, press Power. Three boot
screens appear in sequence before the analyzer enters it's default SWR R&X measurement
mode. The first two screens show the analyzer's software version and copyright date
(important information when seeking technical assistance from VECTRONICS):
SWR-584C
Ver X.XX VECTRONICS
©
Voltage Low 10.5
10.125 MHz 1.3
R=42 X=12 SLP
Power Saving Off