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4.3 CDMA Transmitter and Receiver Test --- TX and RX Tester Mode
• Modulation function keys:
1st page ----- AF Osc.1 is used only to modulate (Mod) the internal signal generator (SG) in this device.
When the Call Proc. State is “conversation”, it is used for SAT modulation; so, the frequency,
deviation, and On/Off setting cannot be changed.
[AF Osc.1 Frequency] F8 Sets AF Osc.1 frequency (modulation frequency of the internal signal generator).
20.0 Hz ≤ Set value ≤ 20 000.0 Hz, 0.1 Hz step
Initial value: 1 004.0 Hz
(When the same frequency as of AF Osc.2 is specified at Mod, the deviation is ob-
tained by the addition of the respective deviation set value.)
[AF Osc.1 Deviation] F9 Sets the FM deviation of the internal signal generator by the AF Osc.1 output.
0.00 kHz ≤ Set value≤ 40.00 kHz, 0.01 kHz step
Initial value: 8.00 kHz
[AF Osc.1 On Off] F11 Sets the AF Osc.1 output to on and off to set the modulation by AF Osc.1 of the
internal signal generator to on and off.
Initial value: On
(When the output is off, the [AF Osc.1 Deviation] F9 key is not displayed, and the
deviation cannot be specified.)
[Back Screen] F12 Returns to the Setup Common Parameter screen.
2nd page ---- AF Osc.2 is used for the modulation (Mod mode) of the built-in signal generator (SG) in the
MT8801B, or AF output signal (AF mode) from the AF Output connector on the front panel.
[AF Osc.2 Signal] F7 Displays the AF Osc.2 Signal menu.
[AF Signal] F7 Selects AF-Osc.2 signal type of Tone, Noise (ITU-T G.227), or Noise (White).
When Noise is set, displays “Noise (Noise type)” at the frequency display area.
Initial value: Tone
[Output for Mod AF] F8 Selects the AF Osc.2 signal usage for Mod (SG modulation signal) or AF (AF
signal output from AF Output connector).
Initial value: Mod
[return] F12 Returns to the Modulation menu.
[AF Osc.2 Frequency] F8 In Mod mode, sets the modulation frequency of the signal generator.
(When setting the same frequency as AF Osc. 1 in the Mod mode, the deviation be-
comes the sum of the set values.)
In AF mode, sets the frequency of the AF signal output from the AF Output connector.
When the AF Osc. 2 Signal type is Noise, this item disappears.
20.0 Hz ≤ Set value ≤ 20 000.0 Hz, 0.1 Hz step
Initial value: 1 004.0 Hz
[AF Osc.2 Deviation] F9 In Mod mode, sets the FM deviation of the SG.
In AF mode, this item disappears.
0.00 kHz ≤FM Set value≤ 40.00 kHz, 0.01 kHz step
Initial value: 8.00 kHz
[AF Osc.2 Level] F10 In AF mode, sets the AF signal output level as shown below.
Initial value: 100.0 mV
When 600 Ω is set for Impedance of AF Output on the Setup Analog TX Measure
Parameter screen:
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