Yaesu VX-8DR/E, Service Manual

Page: 10 / 118

10 VX-8R/E and VX-8DR/E Technical Supplement
Alignment
Wide FM S-Meter Full-Scale Adjustment (S9 LEVEL)
Ì
Connect the test equipment as shown in Figure 2: RX
Alignment Setup.
Ì
Rotate the DIAL knob to select the Alignment Menu
" S9 LEVEL " with " WFM " icon.
Ì
Set the RF Signal Generator output to 435.100 MHz, at
a level of +20 dBµ, ±20 kHz deviation with a 1 kHz
audio tone.
Ì
Press the [
V/M
] button (the " " icon will appear on the
display).
Ì
Press the [
F/W
] key two times to store the FM SMeter
Full Scale level.
Ì
Press the [
V/M
] button (the " " icon will disappear on
the display).
TX Power (HI) Adjustment (HI POWER)
Ì
Connect the test equipment as shown in Figure 1: TX
Alignment Setup.
Ì
Rotate the DIAL knob to select the Alignment Menu
" HI POWER ".
Ì
Press the [
V/M
] button (the " " icon will appear on the
display).
Ì
Press the PTT switch to transmit and rotate the DIAL
knob so that the Power Meter reading is 5.0 W (±0.1
W).
Ì
Release the PTT switch, and then press the [
V/M
] but-
ton (the " " icon will disappear on the display).
TX Power (L3) Adjustment (L3 POWER)
Ì
Connect the test equipment as shown in Figure 1: TX
Alignment Setup.
Ì
Rotate the DIAL knob to select the Alignment Menu
" L3 POWER ".
Ì
Press the [
V/M
] button (the " " icon will appear on the
display).
Ì
Press the PTT switch to transmit and rotate the DIAL
knob so that the Power Meter setting is 2.5 W (±0.1
W).
Ì
Release the PTT switch, and then press the [
V/M
] but-
ton (the " " icon will disappear on the display).
TX Power (L2) Adjustment (L2 POWER)
Ì
Connect the test equipment as shown in Figure 1: TX
Alignment Setup.
Ì
Rotate the DIAL knob to select the Alignment Menu
" L2 POWER ".
Ì
Press the [
V/M
] button (the " " icon will appear on the
display).
Ì
Press the PTT switch to transmit and rotate the DIAL
knob so that the Power Meter setting is 1.0 W (±0.1
W).
Ì
Release the PTT switch, and then press the [
V/M
] but-
ton (the " " icon will disappear on the display).
TX Power (L1) Adjustment (L1 POWER)
Ì
Connect the test equipment as shown in Figure 1: TX
Alignment Setup.
Ì
Rotate the DIAL knob to select the Alignment Menu
" L1 POWER ".
Ì
Press the [
V/M
] button (the " " icon will appear on the
display).
Ì
Press the PTT switch to transmit and rotate the DIAL
knob so that the Power Meter setting is 50 mW (+30
mW/ -20 mW) (VX-8E Type: 0.2W±0.05W).
Ì
Release the PTT switch, and then press the [
V/M
] but-
ton (the " " icon will disappear on the display).
TX Deviation Adjustment (MAX DEV)
Ì
Connect the test equipment as shown in Figure 1: TX
Alignment Setup.
Ì
Rotate the DIAL knob to select the Alignment Menu
" MAX DEV ".
Ì
Set the AF Signal Generator output to 50 mVrms with
a 1 kHz audio tone.
Ì
Press the [
V/M
] button (the " " icon will appear on the
display).
Ì
Press the PTT switch to transmit and rotate the DIAL
knob so that the Deviation Meter setting is 4.2 kHz ±
0.2 kHz (USA version) or 4.5 kHz ± 0.2 kHz (EXP/EU
versions).
Ì
Release the PTT switch, and then press the [
V/M
] but-
ton (the " " icon will disappear on the display).