Yaesu FTdx5000 Series, Техническое дополнение

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ALIGNMENT-14
Alignment
FT
DX
5000 Series Technical Supplement
Noise Blanker Circuit Adjustment
Set the following controls as indicated:
[IPO] button: “Sub band (VFO-B)” AMP1
[ATT] button: “Sub band (VFO-B)” OFF
[R.FLT] button: “Sub band (VFO-B)” AUTO
[AGC] button: “Sub band (VFO-B)” AUTO
[NB] button: “Sub band (VFO-B)”
ON (for short-duration pulse noise)
[NB] “Sub band (VFO-B)” knob: 12 o' clock
[RF GAIN] knob: “Sub band (VFO-B)”
Fully clockwise
[FLT] button: “Sub band (VFO-B)” THRU
Set the Sub Band (VFO-B) frequency to 14.200
MHz in the CW mode.
Connect the DC voltmeter to TP1043 on the TRX
Unit.
Connect the RF Signal Generator to the “ANT 1”
jack, then set the output level to 40 dBµ at 14.200
MHz.
Adjust T1026 and T1019 on the TRX Unit for mini-
mum deflection on the DC voltmeter.
Turn the NB to “OFF” by pressing the [NB] but-
ton.
Disconnect the RF millivoltmeter from TP1043.
IF Trap (40.455 MHz) Adjustment
Set the following controls as indicated:
[IPO] button: AMP2
[ATT] button: OFF
[R.FLT] button: AUTO
[AGC] button: AUTO
[RF GAIN] knob: Fully clockwise
[VRF] button: THRU
Set the Sub Band (VFO-B) frequency to 50.000
MHz in the CW mode.
Connect the AC millivoltmeter and 4 Ohm
dummy load to the EXT SP jack.
Connect the RF Signal Generator to the “ANT 1”
jack, then set the output level to 60 dBµ ~ 90 dBµ
at 40.455 MHz.
Adjust T1012 on the TRX Unit for minimum de-
flection on the AC millivoltmeter.
If the Main S-meter deflects while adjusting, re-
duce the RF Signal Generator output so that the
Main S-meter does not deflect.
RF AGC Adjustment
Set the following controls as indicated:
[IPO] button: “Sub band (VFO-B)” AMP1
[ATT] button: “Sub band (VFO-B)” OFF
[R.FLT] button: “Sub band (VFO-B)” AUTO
[AGC] button: “Sub band (VFO-B)” AUTO
[RF GAIN] knob: “Sub band (VFO-B)”
Fully clockwise
[FLT] button: “Sub band (VFO-B)” THRU
[MODE] button: “Sub band (VFO-B)” CW
Connect the RF Signal Generator to the “ANT 1”
jack, and connect the Digital DC voltmeter (high-
Z) to J1033 pin 5 on the TRX Unit.
Press and hold in the [1(1.8)], [2(3.5)], and [3(7)]
keys, while turning the radio on, to enter the
alignment mode.
Select the appropriate “Alignment Parameter”
using the (VFO-A)[SELECT] knob per the chart
below, then set the RF Signal Generator output
to each frequency & level, and adjust the (VFO-
B)[SELECT] knob for the corresponding DC volt-
meter reading at each frequency.
Press and hold in the [MENU] button for 2 sec-
onds to save the new setting and exit from the
alignment mode.
RF S
IGNAL
G
ENERATOR
1.900 MHz, 76 dBµ
3.750 MHz, 76 dBµ
7.150 MHz, 76 dBµ
10.125 MHz, 76 dBµ
14.175 MHz, 76 dBµ
18.117 MHz, 76 dBµ
21.255 MHz, 76 dBµ
24.940 MHz, 76 dBµ
28.850 MHz, 76 dBµ
52.000 MHz, 76 dBµ
A
LIGNMENT
P
ARAMETER
09-01 S-RGC1.8
09-02 S-RGC3.5
09-03 S-RGC7
09-04 S-RGC10
09-05 S-RGC14
09-06 S-RGC18
09-07 S-RGC21
09-08 S-RGC24
09-09 S-RGC28
09-10 S-RGC50
VFO-A F
REQUENCY
1.900 MHz
3.750 MHz
7.150 MHz
10.125 MHz
14.175 MHz
18.117 MHz
21.255 MHz
24.940 MHz
28.850 MHz
52.000 MHz
DC
VOLTMETER
0.2 V (±0.05V)
0.2 V (±0.05V)
0.2 V (±0.05V)
0.2 V (±0.05V)
0.2 V (±0.05V)
0.2 V (±0.05V)
0.2 V (±0.05V)
0.2 V (±0.05V)
0.2 V (±0.05V)
0.2 V (±0.05V)