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24 Chapter 1
Getting Started with AMPS Test
Display an FM Carrier Signal (Loopback Test)
Get Started with the Test Set
Here are some guides for selecting screens and fields:
Use the knob to move the cursor around the screen. Reverse video boxes
indicate fields that can be selected.
To select a field on the screen, push the knob, or press the
Enter key.
Use the
RF Gen, RF Anl, and Spec Anl keys to access the RF GENERATOR,
RF ANALYZER, and SPEC ANL screens.
Selecting the titlebar at the top of the screen displays a list of screens
that can be immediately accessed when selected.
Preparing the Test Set
1. Plug in the Test Set.
2. Turn on the Test Set (or press
Preset if it is already on). The CDMA
ANALYZER screen will be displayed.
3. Press the
Inst Config key.
4. Select RF Display, and set the field to Freq
.
5. Verify your connections. See “Connections for FM Carrier Loopback
Test” on page 23.
Generate an FM Carrier Signal
Refer to Figure 1-2.
1. Press
CDMA Gen to go to the CDMA GENERATOR screen.
2. Select CW RF Path and set it to Bypass
. This shuts off the IQ
modulation normally used for CDMA testing.
3. Press the
RF Gen key to go to the RF GENERATOR screen.
4. Select RF Gen Freq and use the keypad to set the frequency to
850.000 MHz.
5. Select Amplitude and set the amplitude to 0 dBm.
6. Select Output Port and verify that the port is set to Dupl
.
7. Turn on FM modulation by positioning the cursor in the lower half of
the AFGen1 To field and pressing the
On/Off key.
The default FM deviation is 2.9 kHz. The default FM rate is
1.0 kHz.
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