Standart HX290U, Service Manual

Page: 21 / 40

20
- Squelch sensitivity confirmation -
(a) Press the MONI key twice within 1 second to set the
squelch level. Turn the channel knob to set the
squelch level to 01 (threshold squelch level).
(b) Set the transceiver channel to 01.
(c) Set the standard signal generator (SSG) as follows.
Frequency : see Table 4-1
Standard modulation frequency : 1 kHz
Standard frequency deviation : ± 3.0 kHz
(d) Gradually increase the output level of the SSG and
stop when squelch opens completely. At this point,
confirm that the SSG output level is –7 dB or less.
(e) Press the MONI key twice within 1 second to set the
squelch level. Turn the channel knob to set the
squelch level to 15 (tight squelch level).
(f) Confirm that squelch opens when the SSG output level
is 0 dBµ(emf).
(g) Set the transceiver channel to 04.
(h) Press the MONI key twice within 1 second to set the
squelch level. Turn the channel knob to set the
squelch level to 01(threshold squelch level).
(i) Set the standard signal generator (SSG) as follows.
Frequency : see Table 4-1
Standard modulation frequency : 1 kHz
Standard frequency deviation : ± 1.5 kHz
(j) Gradually increase the output level of the SSG and
stop when squelch opens completely. At this point,
confirm that the SSG output level is –7 dBµ or less.
(k) Press the MONI key twice within 1 second to set the
squelch level. Turn the channel knob to set the
squelch level to 15 (tight squelch level).
(l) Confirm that squelch opens when the SSG output level
is 0 dBµ(emf).
- SmarTrunk II terminal confirmation -
(a) Set the transceiver channel to 01.
(b) Set the standard signal generator (SSG) as follows.
Frequency : see Table 4-1
Standard modulation frequency : 1 kHz
Standard frequency deviation : ± 3.0 kHz (Wide)
/ ± 1.5 kHz (Narrow)
Output level : 60 dBµ
(c) Attach a 100 k
Ω
load to pin 7 or 8 of JL04. Put the
transceiver into the receive mode.
(d) Confirm that the output level from pin 7 or 8 of JL04 is
approximately 170 mV (Wide) or 85 mV (Narrow).
(e) Input a 1 kHz, 1 Vp-p audio signal to pin 5 or 6 of JL04
from the audio generator. (AC connection by 0.1 µF)
(f) Put the transceiver into the transmit mode.
(g) At this point, confirm that the deviation is approximately
± 3.0 kHz (Wide) or ± 1.6 kHz (Narrow).
- Setting when Shipped from Factory -
For information on how to make factory settings, refer to
the separate Programming Manual (Part number :
408B851040) for details.
(a) Perform all reset.
(b) The factory settings of the transceiver are listed below.
HX290UKA131
Channel TX/RX Frequency Wide/Narrow Power
01
RX 460.100 MHz Wide
TX 460.100 MHz Wide High
Clone frequency RX: 460.100 MHz (Wide)
TX: 460.100 MHz (Wide)
HX290UKA191
Channel TX/RX Frequency Wide/Narrow Power
01
RX 380.100 MHz Narrow
TX 380.100 MHz Narrow High
Clone frequency RX: 380.100 MHz (Narrow)
TX: 380.100 MHz (Narrow)
HX290UKA181
Channel TX/RX Frequency Wide/Narrow Power
01
RX 357.500 MHz Wide
TX 357.500 MHz Wide High
Clone frequency RX: 357.500 MHz (Wide)
TX: 357.500 MHz (Wide)
HX290UKA111
Channel TX/RX Frequency Wide/Narrow Power
01
RX 417.500 MHz Wide
TX 417.500 MHz Wide High
Clone frequency RX: 417.500 MHz (Wide)
TX: 417.500 MHz (Wide)
Adjustment: 4