B-Band 50 Mhz Band Adjustment - Yaesu VX-8R/E Service Manual

Alignment

B-Band 50 MHz Band Adjustment

Press the [BAND] key to select the 50 MHz Amateur band.
Receiver Sensitivity Adjustment (TUNE DC)
Ì Connect the test equipment as shown in Figure 2: RX
Alignment Setup.
Ì Rotate the DIAL knob to select the Alignment Menu
"TUNE DC".
Ì Set the RF Signal Generator output to 52.100 MHz, at a
level of -10 dBµ, ±3.5 kHz deviation with a 1 kHz audio
tone.
Ì Press the [ V/M ] button (the " " icon will appear on
the display).
Ì Rotate the DIAL knob for maximum deflection on the
SINAD meter.
Ì Press the [ V/M ] button (the " " icon will disappear on
the display).
Squelch Hysteresis Confirmation (HIS SQL)
Ì Rotate the DIAL knob to select the Alignment Menu
"HIS SQL".
Confirm that the alignment value is "0".
Squelch Threshold Adjustment (THLD SQL)
Ì Connect the test equipment as shown in Figure 2: RX
Alignment Setup.
Ì Rotate the DIAL knob to select the Alignment Menu
"THLD SQL".
Ì Set the RF Signal Generator output to 52.100 MHz, at a
level of -11 dBµ, ±3.5 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 Squelch
Threshold level.
Ì Press the [ V/M ] button (the " " icon will disappear on
the display).
20
Tight Squelch Adjustment (TIGH SQL)
Ì Connect the test equipment as shown in Figure 2: RX
Alignment Setup.
Ì Rotate the DIAL knob to select the Alignment Menu
"TIGH SQL".
Ì Set the RF Signal Generator output to 52.100 MHz, at a level
of -3 dBµ, ±3.5 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 Squelch
Tight level.
Ì Press the [ V/M ] button (the " " icon will disappear on
the display).
FM S-Meter S-1 Adjustment (S1 LEVEL)
Ì Connect the test equipment as shown in Figure 2: RX
Alignment Setup.
Ì Rotate the DIAL knob to select the Alignment Menu
"S1 LEVEL" with "NFM" icon.
Ì Set the RF Signal Generator output to 52.100 MHz, at a
level of -7 dBµ, ±3.5 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 S-Meter
S-1 level.
Ì Press the [ V/M ] button (the " " icon will disappear on
the display).
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 "NFM" icon.
Ì Set the RF Signal Generator output to 52.100 MHz, at a
level of +20 dBµ, ±3.5 kHz deviation with a 1 kHz au-
dio 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 S-Meter
Full Scale level.
Ì Press the [ V/M ] button (the " " icon will disappear on
the display).
VX-8R/E and VX-8DR/E Technical Supplement