Sony SPP-A9171 Service Manual page 28

• Transmission Wave:
ATTEN 10 dB
RL 0 dBm 10 dB/
MKR
903.392 MHz
–16.00 dBm
CENTER 904.2 MHz
RBW 30 kHz VBW
ATTEN 10 dB
RL 0 dBm 10 dB/
MKR
903.233 MHz
–14.67 dBm
CENTER 904.2 MHz
RBW 30 kHz VBW
ATTEN 10 dB
RL 0 dBm 10 dB/
MKR
903.233 MHz
–14.67 dBm
CENTER 904.2 MHz
RBW 30 kHz VBW
MKR –16.00 dBm
903.392 MHz
SPAN 5.000 MHz
SWP 50.0 msec
30 kHz
Fig. 1
MKR –14.67 dBm
903.233 MHz
SPAN 5.000 MHz
SWP 50.0 msec
30 kHz
Fig. 2
MKR –14.67 dBm
903.233 MHz
SPAN 5.000 MHz
30 kHz SWP 50.0 msec
Fig. 3
–6
–7
18dB
–8
–9
[Check Center Frequency]
Measuring process
• Setting Spectrum analyzer:
Center frequency : 904.2 MHz (CH1)
RBW
VBW
Span
• Setting Test mode:
Continuous Transmit mode (CH1 High Power)
(Refer to "Test Mode" on page 21)
• Measurement:
Measure transmitting wave f
(Refer Fig. 5)
• Specification:
904.2 MHz ± 27 kHz
• Center Frequency:
10dB/
[Confirm Transmitting output]
Measuring process
• Setting Spectrum analyzer:
Center frequency : 904.2 MHz (CH1)
RBW
VBW
Span
• Setting Test mode:
Continuous Transmit mode (CH1 High Power)
(Refer to "Test Mode" on page 21)
— 28 —
–5
3
4
5
7
–1
–4
6
1
2
–3
–2
8
Fig. 4
: 10 kHz
: 10 kHz
: 1 MHz
(Formula of center frequency)
0
f
f 1
f –1 f
–2 2
f
0
Fig. 5
: 1 MHz
: 100 kHz
: 5 MHz
9
Tr-A
PN