Yaesu FT2DR, Техническое дополнение

Страница: 14 / 65

FT2DR/DE Technical Supplement
Alignment
ALIGNMENT-9
B-Band 430 MHz Band Adjustment
NOTICE: Do not touch the following Alignment
Menus in B-Band 430 MHz Band Adjustment:
" PLL REF "
" HI POWER "
" L3 POWER "
" L2 POWER "
" L1 POWER "
" MAX DEV "
" TONE DEV "
" DCS DEV "
Press the [
A/B
] key to change the operating band
to the "B-Band".
Press the [
BAND
] key to select the 430 MHz Ama-
teur band.
Note: When the transceiver recalls Alignment Menu
" PLL REF ", the [
A/B
] and [
BAND
] key operation is
ignored. In this case, rotate the
DIAL
knob to select an
Alignment Menu other than " PLL REF ".
Receiver Sensitivity Adjustment (TUNE DEV)

Connect the test equipment as shown in Figure 2:
RX Alignment Setup.

Rotate the
DIAL
knob to select the Alignment
Menu " TUNE DEV ".

Set the RF Signal Generator output to 435.100
MHz, at a level of -10 dBμ, ±3.5 kHz deviation
with a 1 kHz audio tone.

Press the [
V/M
] button (the "Data" will appear
on the display).

Rotate the
DIAL
knob for maximum deflection
on the SINAD meter.

Press the [
V/M
] button (the "Data" will disap-
pear on the display).
Squelch Hysteresis Confirmation (HIS SQL)

Rotate the
DIAL
knob to select the Alignment
Menu " HIS SQL ".

Confirm that the alignment value is "0".
Squelch Threshold Adjustment (THLD SQL)

Connect the test equipment as shown in Figure 2:
RX Alignment Setup.

Rotate the
DIAL
knob to select the Alignment
Menu " THLD SQL ".

Set the RF Signal Generator output to 435.100
MHz, at a level of -11 dBμ, ±3.5 kHz deviation
with a 1 kHz audio tone.

Press the [
V/M
] button (the "Data" will appear
on the display).

Press the [ X
] key two times to store the Squelch
Threshold level.

Press the [ V/M
] button (the "Data" will disap-
pear on the display).
Tight Squelch Adjustment (TIGH SQL)

Connect the test equipment as shown in Figure 2:
RX Alignment Setup.

Rotate the DIAL knob to select the Alignment
Menu " TIGH SQL ".

Set the RF Signal Generator output to 435.100
MHz, at a level of -4 dBμ, ±3.5 kHz deviation
with a 1 kHz audio tone.

Press the [ V/M
] button (the "Data" will appear
on the display).

Press the [ X
] key two times to store the Squelch
Tight level.

Press the [ V/M
] button (the "Data" will disap-
pear on the display).
FM S-Meter S-1 Adjustment (S1 LEVEL)

Connect the test equipment as shown in Figure 2:
RX Alignment Setup.

Rotate the DIAL knob to select the Alignment
Menu " S1 LEVEL ".

Set the RF Signal Generator output to 435.100
MHz, at a level of -7 dBμ, ±3.5 kHz deviation
with a 1 kHz audio tone.

Press the [ V/M
] button (the "Data" will appear
on the display).

Press the [ X
] key two times to store the FM
S-Meter S-1 level.

Press the [ V/M
] button (the "Data" will disap-
pear on the display).