TK-5210
(
G
)
50
BER (Bit Error Rate) Measurement
1. The Panel Test Mode is used to measure the BER (Refer
“Test mode operation features” described on page 45.).
2. Select “26” for test signaling (Refer to “Test Signaling”
described on page 46.).
When “26” is selected for the test signaling, the Band-
width is automatically selected to “P25”.
(If there is no RF input signal, the display shows
“500000”.)
3. Select a fi lter (Refer to “Bandwidth” described on page
46.).
4. Select a test frequency (Refer to “Test Frequency” de-
scribed on page 46.).
5. Measure the BER (Bit Error Rate) using the digital radio
tester. Enter a standard input signal into the transceiver
as a standard tone test pattern.
6. Adjust the input signal level to achieve the standard bit
error rate (BER).
(For example, if the BER is 5%, the display shows
“050000”.)
ADJUSTMENT
C4FM (P25) Deviation Adjustment
1. The transceiver adjusts the deviation between High De-
viation ±1800Hz for the C4FM (P25).
2. The Symbol Rate Pattern is used when adjusting the
High Deviation for the C4FM (P25) (Refer to “Test Signal-
ing” described on page 46.). This test signal has a peak
deviation equal to
π
/2 1800Hz = 2827Hz.
Service Jig
■
Nut wrench
In order to turn the volume nut and the channel selector
nut, use a recommendation tool.
KENWOOD part No.: W05-1123-00
Adjustment Points
L201
L202
L204
L205
RX BPF
TX-RX UNIT (X57-7650-10)(A/4)
Foil side
S
2nd Lo
+
TX-RX UNIT (X57-7650-10)(A/4)
Component side
BPF GND
RX BPF
CV
S
+
