14
Setup Menus
The Setup mode is accessed by pressing and holding the Mode button for about 1 second until you see the Reference screen shown
below. Exiting the Setup mode is done by holding the Mode button for about 2 seconds until you see the Main operating screen. You
will pass through the Calibration mode on the way back to Operate.
Reference screen. Displays the reference voltage from the gain/phase detector, as well as the RSSI
voltage (Received Signal Strength Indicator) from the AGC chip used in the frequency counter preamp. The
screen also shows temperature in Deg F & C. The Dn button resets the microprocessor, and is useful when
flash updating the firmware in the LP-100A. The Up button toggles the temperature mode.
This screen is used to set the “User” SWR Alarm setpoint. It can be set between 1.0 and 5.0 in steps of 0.1.
Use Dn to lower value, Up to increase it.
This screen allows setting the SWR Alarm power threshold and Power display type. The alarm threshold is
used mainly in contesting stations with multiple transmitters to prevent false alarms when energy from
another transmitter is picked up by an antenna. The choices are 0,0.1, 1.0 and 10.0 W. The default setting
is 0.0W (active at all power levels). The Dn button will allow you to cycle through these choices.
Note: This
threshold only affects the alarm. Use the SWR threshold Setup screen to limit both the SWR display and
alarm below the selected power level.
Pwr Mode options are Fwd Power and Net Power (Fwd minus Ref). The Up button toggles these choices.
The default is Net.
Range.
Allows setting of maximum bargraph scale for the three autoranging scales. The Dn button cycles
between Low, Mid & High range. Select a power range, and then set the bargraph maximum range.
Bargraph Max Range.
The Up button scrolls through the various max power options for each range…
Low
– 5, 10, 15, 20, 25W … Mid – 50, 75, 100, 125, 150, 175, 200, 225, 250W…High – 500, 750, 1000,
1250, 1500, 1750, 2000, 2250, 2500, 3000W. The displayed range includes 10% above the indicated
value. Note: Defaults are 15W, 100W, and 1500W.
Note: These ranges are scaled by a factor of x1.67
when using a 5KW coupler, and 3.33 when using a 10KW coupler.
This screen is used to set the width of the bargraph in the Average and Tune modes. The Peak mode is
always 13dB. It is useful for optimizing the bargraph resolution for amplifier tuning, for instance. The
displayed range goes from the maximum set in the previous screen, to a minimum which is the selected
number of dB below that maximum. Default is 12dB Use Dn to lower value, Up to increase it.
This screen allows setting of the number of samples used to average the numerical readout in Average
Power mode, and for SWR in all modes. The range is 2 to 24 samples for Power, and 0 to 5 samples for
SWR. The default is 8 samples for Power and 2 samples for SWR. Use Dn to cycle through Power settings
and Up to cycle through SWR settings. Both wraparound to the beginning.
This screen allows setting the peak hold time in the Peak mode. The range is 0.25 to 5 seconds. The
default of 2 seconds is good for normal SSB or CW operation. Use Dn to lower value, Up to increase it.
This screen is used to set the decay rate for the bargraphs. Decay choices are “Fast”, “Med.” and “Slow.
The slowest setting corresponds to a decay of about 3 seconds, and smoothes the response considerably
for SSB. Default is Med. Try all the settings to see what suits you. Use Dn to lower value, Up to increase it.
Note: the attack setting is always fast, and will provide full response to a single dit at 100wpm.
This screen is used to select different maximum power values to be used with custom high power couplers.
Use Dn/Up to cycle through the choices. The default is LPC1 (the standard coupler). Current choices are
“LPC1 3KW 1.8-54MHz, “LPC2 5KW 1.8-30MHz”, “LPC3 250W 0.1 - 20MHz”, ”, “LPC4 5KW 1.8-54MHz”,
“LPC5 10KW 1.8-30MHz” and “LPC6 1KW 0.10 to 10MHz”. Use Dn/Up to cycle through choices.
This screen is used to select the way you want SWR displayed when you are not transmitting. The choices
are… “-.--“, “1.00”, “. . . .”, blank and hold last SWR reading. If you select Hold Last, it will be reset when
you transmit again. Use Dn/Up to cycle through choices. Default is as shown.
Summary of Contents for LP-100A
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