Agilent Technologies E4400-90326 quick start Setting Up a Digital Modulation in the GSM Format

ESG Family Signal Generators	Getting Started
	Setting Up a Digital Modulation in the GSM Format

Setting Up a Digital Modulation in the GSM Format

NOTE You must have an ESG-D or ESG-DP Series Signal Generator with Option UN8 to perform this procedure.

Using this procedure you will set up the signal generator to output a GMSK digitally modulated signal in the GSM format with the following characteristics:

•carrier frequency set to 891 MHz

•power level set to −5 dBm

•timeslot 0 activated and configured as a Custom channel

•a fixed 4-bit repeating sequence selected as the data pattern for timeslot 0

•timeslot 7 activated and configured as a Normal channel

•4 ones and 4 zeros selected as the data pattern for timeslot 7

Setting the Carrier Frequency

1.Press Preset.

2.Press Frequency.

3.Enter 891 using the numeric keypad and press the MHz softkey.

This sets the signal generator to its factory-defined instrument state.

Frequency becomes the active function and the preset value for frequency is displayed in the active entry area.

The new carrier frequency (891.000 000 00 MHz) is shown in both the FREQUENCY area and the active entry area of the display.

Setting the Power Level

1.Press Amplitude.

2.Enter −5 using the numeric keypad and press the dBm softkey.

Amplitude becomes the active function and the preset value for amplitude is displayed in the active entry area.

The new power level (-5.00 dBm) is shown in both the AMPLITUDE area and the active entry area of the display.

Quick Start Guide 1-11