Service manual

GX30
2 – 32
CONFIDENTIAL
GX30 TX power Table (25°C, voltage: 3.7[V])
3) RX test
The handset receives burst signals in this test.
Figure 64
[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 start receiving 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 end receiving burst signals.
* In this test, the reception timing cannot be synchronized with burst signals from Signal Generator or GSM tester.
* The standard RX Gain Setting is:
(Input power at the aerial connector of the handset) + (RX Gain) = –16 dBm
Excessive Input power or RX Gain may cause damage to the handset.
GSM850 Band GSM900 Band DCS/PCS Band
PCL GSM850 Tolerance PCL GSM900 Tolerance PCL DCS/PCS Tolerance
[dBm] [dBm] [dBm]
7 29 +/–2 dB 5 33 +/–2 dB 0 30 +/–2 dB
8 27 +/–3 dB 6 31 +/–3 dB 1 28 +/–3 dB
9 25 +/–3 dB 7 29 +/–3 dB 2 26 +/–3 dB
10 23 +/–3 dB 8 27 +/–3 dB 3 24 +/–3 dB
11 21 +/–3 dB 9 25 +/–3 dB 4 22 +/–3 dB
12 19 +/–3 dB 10 23 +/–3 dB 5 20 +/–3 dB
13 17 +/–3 dB 11 21 +/–3 dB 6 18 +/–3 dB
14 15 +/–3 dB 12 19 +/–3 dB 7 16 +/–3 dB
15 13 +/–3 dB 13 17 +/–3 dB 8 14 +/–3 dB
16 11 +/–5 dB 14 15 +/–3 dB 9 12 +/–4 dB
17 9 +/–5 dB 15 13 +/–3 dB 10 10 +/–4 dB
18 7 +/–5 dB 16 11 +/–5 dB 11 8 +/–4 dB
19 5 +/–5 dB 17 9 +/–5 dB 12 6 +/–4 dB
18 7 +/–5 dB 13 4 +/–4 dB
19 5 +/–5 dB 14 2 +/–5 dB
15 0 +/–5 dB
RX Gain Setting bar
RX frequency of selected channels
Current RX Gain (Read only)
RX ON/OFF button
This indicator appears while
receiving burst signals.
Sniff ON/OFF