Kenwood TKR-740 Service Manual page 72

RX UNIT
Item Condition
7. Analog 1) Connect the SSG to RX IN, then select the
Squelch channel that the user w ill use (Wide)
Adjust M OD: 1kHz
(Wide) DEV : 2.4kHz
SSG : 3dB below to
12dB SINAD level
AF : 0.45V/4Ω
(Narrow ) 1) Connect the SSG to RX IN, then select the
channel that the user w ill use (Narrow )
M OD: 1kHz
DEV : 1.5kHz
SSG : 3dB below to
12dB SINAD level
AF : 0.45V/4Ω
8. RSSI 1) Connect the SSG to RX IN, then select the
Squelch channel that the user w ill use (Wide)
Adjust M OD: 1kHz
(Wide) DEV : 2.4kHz
SSG : 3dB below to
12dB SINAD level
AF : 0.45V/4Ω
(Narrow ) 1) Connect the SSG to RX IN, then select the
channel that the user w ill use (Narrow )
M OD: 1kHz
DEV : 1.5kHz
SSG : 3dB below to
12dB SINAD level
AF : 0.45V/4Ω
9. RX S/N 1) Connect the SSG to RX IN, then select the
Check channel that the user w ill use (Wide)
(Wide) M OD: 1kHz
DEV : 2.4kHz
SSG : 501µV (–53dBm)
AF : 2.84V/4Ω
(Narrow ) 1) Connect the SSG to RX IN, then select the
channel that the user w ill use (Narrow )
M OD: 1kHz
DEV : 1.5kHz
SSG : 501µV (–53dBm)
AF : 2.84V/4Ω
10.RD Output 1) Connect the SSG to RX IN, then select the
Level channel that the user w ill use (Wide)
Adjust M OD: 1kHz
(Wide) DEV : 2.4kHz
SSG : 501µV (–53dBm)
(Narrow ) 1) Connect the SSG to RX IN, then select the
channel that the user w ill use (Narrow )
M OD: 1kHz
DEV : 1.5kHz
SSG : 501µV (–53dBm)
ADJUSTMENT
M easurement
Test
Unit Terminal Unit Parts
equipment
SSG RX RX IN
Audio, TEST/SPKR
Analyzer SPO Terminal
VTVM (pin 12)
oscilloscope 4Ω Load
SSG RX IN
DVM CONTROL I/O
RD Terminal
(pin 10)
600Ω Load
TKR-740
Adjustment
Specifications/
M ethod Remarks
PC ADJ
Adjust to point of
opening squelch
Check –56dB or less
–55dB or less
PC ADJ
80mV ± 5mV
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