User Guide

Nokia Customer Care RF Description and Troubleshooting

2115i/2116/2116i (RH-66)

Receiver Logic Input Voltages

Following are the measure logic levels for the Rx front end (N7160).

Figure 19: Rx logic input voltages

Table 8 includes the logic level values for the Rx front end.

If the logic levels are significantly off (+/- 0.2 V), replace the N7160 and re-measure. If

the voltages are still out of specifications, refer to the Baseband Description and

Troubleshooting chapter.

Table 8: Rx Front-end Logic Levels

Mode

Logic Input Voltages

IF_SEL

BAND

GAIN_CTL

Cell CDMA high gain 0 V 0.1 V 2.75 V

Cell CDMA low gain 0 V 0.1 V 0 V

PCS CDMA high gain 0 V 2.68 V 2.75 V

PCS CDMA low gain 0 V 2.68 V 0 V

AMPS high gain 2.76 V 0.1 V 2.76 V

AMPS low gain 2.76 V 0.1 V 0 V