Performing a Basic GSM or EDGE Transmitter Measurement

Performing a Basic GSM or EDGE Transmitter Measurement
The first step in measuring GSM or EDGE transmitter performance is to take the base station out of service or, for an in-service measurement, connect the test set to the coupled port. You must also know the channel or frequency of the EDGE signal to be analyzed.
To Make a GSM or EDGE Tx Analyzer Measurement:

Step
Notes

1
Mode

2
[Tx Analyzer] or [Over Air]
Regardless of whether you select [Tx Analyzer] or [Over Air] at this stage, you will access the same measurement software in the analyzer. This means you can select [Tx Analyzer] and proceed to make an Over the Air measurement, and you can select [Over Air] and proceed to make a Tx Measurement.
The two options here are presented for your convenience only, and have no further effect.

3
[GSM Analyzer] or [GSM (w/ EDGE) Analyzer],
or
[GSM Over Air] or [GSM (w/ EDGE) Over Air]
The wording on the key label is dependent on whether or not you have Option 235 - EDGE Analyzer installed, and also whether you selected [Tx Analyzer] or [Over Air] at Step 2.

4
[Chan Std]

5
Highlight the channel standard you want using the up and down arrow buttons.
Select a valid GSM standard such as GSM-850 or EGSM-900. Notice that some valid standards may not be visible to you until you scroll down the screen.

6
[Select]

7
On [Scan Mode] select Range, Auto, or List.

If you selected Range or Auto, go to step 8.
If you selected List, go to step 9.
Each time you press this menu key, the selected option changes.

8
If you selected Range or Auto, you may set Start and Stop frequency/channel and the Step Size of the display range.

On [Start Chan] enter the channel or frequency using the numeric keypad.
On [Stop Chan] enter the channel or frequency using the numeric keypad
On [Step Size] enter the channel or frequency step using the numeric keypad

Menu keys label will read "Chan" or "Freq" depending on the Units you have selected.

9
If you selected List, you may select and change any or all of the available Freqs/Chans on the List screen.

[List]
Highlight the list item you want using the up and down arrow buttons.
Enter a new Freq./Chan.
Repeat the preceding two steps as necessary.
[OK]
In addition, you may add Freqs/Chans to the list or delete Freqs/Chans from the list. Refer to "Adding or Deleting a List Item"

10
Press [Display].

11
On [Position], specify the frequency or the channel (depending on your units of measurement - see Step 8) at which you wish to make your measurement.
The position you specify (specified either by frequency or by channel number) is the position at which your measurement will be made. The numeric results that are displayed refer to this frequency or channel only.
This position is indicated graphically on the Channel Scanner view (see Step 13) by a vertical yellow line.

12
Press [View].

13
Select the measurement view you want shown by pressing one of the three buttons listed below:

[Channel Scanner]
[Power vs. Time]
[Spectrum]
You can select any one of the three graphical views. The numeric results shown in the lower portion of the screen are independent of the graphical view you select. Changing your graphical view does not change which numeric results are displayed.
The numeric results are always taken from the Position (frequency or channel) that you specified at Step 11, and from the first slot at that Position, that is, from Slot 0. This applies even when you are not actually displaying Slot 0 on the screen.

14
Connect to the base station or to your antenna.
If you are making a transmitter measurement, connect your analyzer to the base station. If you are making an Over the Air measurement, connect your analyzer to its antenna.

15
[Level/Location]

16
[Autoscale]


	Step	Notes
1	Mode
2	[Tx Analyzer] or [Over Air]	Regardless of whether you select [Tx Analyzer] or [Over Air] at this stage, you will access the same measurement software in the analyzer. This means you can select [Tx Analyzer] and proceed to make an Over the Air measurement, and you can select [Over Air] and proceed to make a Tx Measurement. The two options here are presented for your convenience only, and have no further effect.
3	[GSM Analyzer] or [GSM (w/ EDGE) Analyzer], or [GSM Over Air] or [GSM (w/ EDGE) Over Air]	The wording on the key label is dependent on whether or not you have Option 235 - EDGE Analyzer installed, and also whether you selected [Tx Analyzer] or [Over Air] at Step 2.
4	[Chan Std]
5	Highlight the channel standard you want using the up and down arrow buttons.	Select a valid GSM standard such as GSM-850 or EGSM-900. Notice that some valid standards may not be visible to you until you scroll down the screen.
6	[Select]
7	On [Scan Mode] select Range, Auto, or List. If you selected Range or Auto, go to step 8. If you selected List, go to step 9.	Each time you press this menu key, the selected option changes.
8	If you selected Range or Auto, you may set Start and Stop frequency/channel and the Step Size of the display range. On [Start Chan] enter the channel or frequency using the numeric keypad. On [Stop Chan] enter the channel or frequency using the numeric keypad On [Step Size] enter the channel or frequency step using the numeric keypad	Menu keys label will read "Chan" or "Freq" depending on the Units you have selected.
9	If you selected List, you may select and change any or all of the available Freqs/Chans on the List screen. [List] Highlight the list item you want using the up and down arrow buttons. Enter a new Freq./Chan. Repeat the preceding two steps as necessary. [OK]	In addition, you may add Freqs/Chans to the list or delete Freqs/Chans from the list. Refer to "Adding or Deleting a List Item"
10	Press [Display].
11	On [Position], specify the frequency or the channel (depending on your units of measurement - see Step 8) at which you wish to make your measurement.	The position you specify (specified either by frequency or by channel number) is the position at which your measurement will be made. The numeric results that are displayed refer to this frequency or channel only. This position is indicated graphically on the Channel Scanner view (see Step 13) by a vertical yellow line.
12	Press [View].
13	Select the measurement view you want shown by pressing one of the three buttons listed below: [Channel Scanner] [Power vs. Time] [Spectrum]	You can select any one of the three graphical views. The numeric results shown in the lower portion of the screen are independent of the graphical view you select. Changing your graphical view does not change which numeric results are displayed. The numeric results are always taken from the Position (frequency or channel) that you specified at Step 11, and from the first slot at that Position, that is, from Slot 0. This applies even when you are not actually displaying Slot 0 on the screen.
14	Connect to the base station or to your antenna.	If you are making a transmitter measurement, connect your analyzer to the base station. If you are making an Over the Air measurement, connect your analyzer to its antenna.
15	[Level/Location]
16	[Autoscale]