Tescom TC-3000C - FM Accuracy; [Figure 8] FM Accuracy Test

2.6 Cleaning, Storage and Shipment
90
4.2.4 FM accuracy
Equipment: Spectrum Analyzer, HP8561E
Signal Generator, HP 8648C
Mixer
Specification: 140 kHz ±10 kHz at rms FM demodulation. filter : 20 Hz ~ 200 kHz
1. Test Setup: Connect equipment as shown in the figure below
[Figure 8] FM accuracy test
2. Set controls of TC-3000C as follows:
Set TC-3000C to “Signal Generator” mode. ( MENU  Select “SigGen”)
- Frequency: 2450 MHz
- Power: 0dBm
- Bit Patten: FFFF0000
- FM Deviation: 150
3. Press “Start” ( F1 ) to begin the test.
4. Record the FM demodulation on the HP8902.
8902A
INPUT 50
IF
LO
R
F
TC-3000C
HP 8648C
RF OUTPUT
70 MHz IF
+13 dBm
2450 MHz
2380 MHz
10dB Attenuator
70MHz BPF