ELECRAFT K3, Руководство пользователя

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50
Front Panel Temperature Sensor

T urn the K3 OFF. Allow about 15 minutes for
the radio to cool to room temperature.

T urn the K3 ON.

Locate the
CONFIG:FP TEMP
menu entry.
Adjust the parameter to match the reading of a
room thermometer.
Note: Deg. C = (deg.
Fahrenheit - 32) * 0.555.
Front panel compartment temperature can be
monitored continuously. T ap
DI S P
, then use VFO
B to select the FP xx C alternate display.
PA Temperature Sensor

T urn the K3 OFF. Allow about 15 minutes for
the PA heatsink to coolto room temperature.
Do not turn the K3 ON during this pe riod.

T urn the K3 ON.

Locate the
CONFIG:PA TEMP
menu entry.
Adjust the parameter to match the reading of a
room thermometer.
Note: Deg. C = (deg.
Fahrenheit - 32) * 0.555.
PA heat sink temperature can be monitored
continuously. T ap
DI S P
, then use VFO B to select
the
P A x x C
alternate display.
S-Meter
S-meter calibration is normally adequate using the
default settings for both the main and sub receivers.
Calibrating the S-meter requires a 50-ohm, 50-
microvolt signal (an accurate signal generator such
as an Elecraft XG1 or XG2 is recommended).

I f you’ r e cal i br at i ng t he s ub r ecei ver ’ s S
-meter:
(1) tap
SU B
to turn the sub receiver on; (2)
hold
B S E T
to gain access to sub receiver
controls; (3) tap
AN T
until you see M AI N
flashed on VFO B; this sets up the sub receiver
to share the main RF path (pg. 37).

Switch to a band applicable to your signal
generator and select CW mode.

Se t transmit powe r to 0.0 W using
P W R
.

T urn preamp on (
P R E
), attenuator off (
AT T
).

T ap
AG C
to select slow AGC ( AG C-S ).

Bypass the ATU, if installed, by holding
ATU
.

Set RF GAIN to maximum ( fully
clockwise) . ( Note:
I f you’ ve as s i gned t he RF
gain control for the present receiver to squelch ,
its RF gain will default to maximum unless
you’ r e cont r ol l i ng RF gai n f r om a r e mot e
-
control computer application.)

Normalize the DSP filtering (hold
N OR M
; pg.
14).

Connect the signal generator to ANT1 and set it
for 50 microvolts RF output.

T une to the frequency of the signal generator
(tune for peak audio response). You can also
use
auto-spot (pg. 30) to accurately match the
pitch of the signal, ensuring that it is centered in
the passband.

The S-meter has both relative and absolute
modes. Refer to the
CONFIG:SMTR MD
menu entry description if you wish to switch
from relative to absolute. (Relative mode is
easier to calibrate and is the factory default.)

Locate the CONFIG:SMTR PK menu entry;
set it to O FF .

Locate the SMTR SC menu entry (S-meter
scale). Use the VFO A knob to set it to the
default value (14).

Adjust
SMTR OF
(S-meter offset) for an S-9
reading.

Switch the signal generator to 1-
µ
V output; the
S-meter should now indicate about S-2 to S-3.
If not, change
SMTR SC by 1 unit (try 15 first,
then 13, then 16, then 12). After each
SMTR
SC change, re-adjust the SMTR OF setting for
an S-9 indication.

When you have completed this procedure,
disconnecting the signal generator should now
show NO bars on the S-meter.