![TOPTEK PA-100U-5 Instruction Manual Download Page 6](http://html1.mh-extra.com/html/toptek/pa-100u-5/pa-100u-5_instruction-manual_1129947006.webp)
Tentative release: 2016-06-21
[5]
RX PREAMPLIFIER ON/OFF
Button toggless receiver preamplifier on or off.
[6]
MULTI-FUNCTION DIGITAL METER
-Normally, meter displays measured parameter value. In SSB mode, meter works in PEP
measurement mode, offering fast rise times and sluggish decay.
-If value cannot be measured, due to insufficient level (happens to SWR),
„---” is dispalyed.
-If value cannot be measured, due to excessive level (happens to PWR IN)
„---” is displayed and flashing.
-Immediately after switching from STANDBY to ON (button [1]), meter animates (scrolls)
the information about RF power and center frequency: „Po.100 Fr.430-460”
[7]
WARNING LEDs
OVERDRIVE
Indicates excessive drive power (>8W**)
HIGH SWR
Indicates excessive SWR. Depending on actual SWR value,
TX mode will be denied or allowed with limited output power.
DC VOLT
Indicates DC voltage being outside operating range
(10.5V** to 14.5V**). TX mode will be denied.
TEMP.
Indicates excessive chassis temperature (T>60** deg.). TX will be
denied.
OTHERS
Indicates other abnormal conditions, such as attempt to operate as
signifficantly lower frequency (connecting VHF transceiver),final
stage gain being too low, others. TX mode will be denied.
(**)
Thresholds are programmed at the factory and may be changed without notice.