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Item Method
3. Click the “Transmit On” button on Tuner.
4. Adjust the power to the required level as follows:
L: 1.2±0.1 W
Transmit-to-Deviation
1. Connect the an
tenna connector of the radio to the RF port of HP8921,
and set HP8921 to TX test mode.
2. Set HP8921 as follows:
IF Filter: 230 kHz
Filter1: <20 Hz HPF
Filter2: <15 kHz LPF
De-Emphasis: OFF
3. Open the Tuner software and go to “TUNE_DATA -> TX ->
Transmit-to-Deviation” in the left navigation tree. Then click the “Transmit
On” button.
4.
Adjust the vernier on Tuner until the frequency deviation displayed on
HP8921 is 5 kHz±50 Hz.
5. Click the “Transmit Off” button on Tuner.
Modulation Balance
Here we take the low frequency deviation for example.
1.
Connect the antenna connector of the radio to the RF port of HP8921,
and set HP8921 to TX test mode.
2. Set HP8921 as follows:
IF Filter: 230 kHz
Filter1: <20 Hz HPF
Filter2: <15 kHz LPF
De-Emphasis: OFF
3. Open the Tuner software and go to “TUNE_DATA -> TX -> Modulation
Balance” in the left navigation tree. Then select an appropriate channel
and click the dialog box below HI_PORT.
4. Click the “Transmit On” button on Tuner.
5. Adjust the value in the dialog box on Tuner until the frequency deviation
displayed on HP8921 is 5 kHz±50 Hz.
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