User Guide

SA-123 RF coupler
SA-123 is an RF coupler for GSM RF testing. It is used together with the
product-specific flash adapter.
The following table shows attenuations from the antenna pads of the
mobile terminal to the SMA connectors of SA-123:
• Nokia 3500c (RM-272)
Band Channel
RX Att.
(dB)
Tolerance
RX
TX Att.
(dB)
Tolerance
TX
EGSM
900
Low 4
+/-1
5.9
+/-1Mid 4 4.3
High 6 3.7
GSM
1800
Low 6
+/-1
6.3
+/-1Mid 7 6.5
High 6 6.5
GSM
1900
Low 6
+/-1
7.3
+/-1Mid 6 6.9
High 6 7
• Nokia 3500c (RM-273)
Band Channel
RX Att.
(dB)
Tolerance
RX
TX Att.
(dB)
Tolerance
TX
EGSM
850
Low 6
+/-1
7.4
+/-1Mid 6 6.8
High 6 6.4
GSM
1800
Low 8
+/-1
6.3
+/-1Mid 8 6.8
High 7 6.4
GSM
1900
Low 5
+/-1
7.5
+/-1Mid 5 7
High 5 6.4
RM-272; RM-273
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