Sharp GX15 Service Manual page 39

GX15 TX power Table (25°C, voltage: 3.7[V])
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
3) RX test
The handset (phone) receives burst signals in this test.
RX Gain Setting bar
Sniff ON/OFF
[Procedure]
1. Select a channel and band. [see 4.6.3.1)]
2. Select RX Gain using RX Gain Setting bar.
3. Choose Sniff ON or OFF.
4. Click "RX ON" to receive burst signals.
5. From GSM tester, send burst signals in the specified channel.
(You can check each part in this state.)
6. Click "RX OFF" to stop burst signals.
* In this test, the reception timing cannot be synchronised with burst signals from Signal Generator or GSM tester.
* The standard RX Gain Setting is:
(Input power at the aerial connector of the handset (phone)) + (RX Gain) = –16 dBm
Excessive input power or RX Gain may cause damage to the handset (phone).
CONFIDENTIAL
GSM Band
PCL GSM Tolerance
[dBm]
33 +/–2 dB
31 +/–3 dB
29 +/–3 dB
27 +/–3 dB
25 +/–3 dB
23 +/–3 dB
21 +/–3 dB
19 +/–3 dB
17 +/–3 dB
15 +/–3 dB
13 +/–3 dB
11 +/–5 dB
9 +/–5 dB
7 +/–5 dB
5 +/–5 dB
RX frequency of selected channels
DCS/PCS Band
PCL DCS/PCS
[dBm]
0 30
1 28
2 26
3 24
4 22
5 20
6 18
7 16
8 14
9 12
10 10
11 8
12 6
13 4
14 2
15 0
Figure 59
2 – 31
Tolerance
+/–2 dB
+/–3 dB
+/–3 dB
+/–3 dB
+/–3 dB
+/–3 dB
+/–3 dB
+/–3 dB
+/–3 dB
+/–4 dB
+/–4 dB
+/–4 dB
+/–4 dB
+/–4 dB
+/–5 dB
+/–5 dB
Current RX Gain (Read only)
RX ON/OFF button
This indicator appears whilst
receiving burst signals.
GX15