Shure UC2 Hand-Held UHF Transmitter
Alignment1525C1044 (TK)
Power Output Measurement
The output power measurement ensures that the output signal is
strong enough for sufficient range when the system is in use. The output
power measurement also verifies that the output power is not above the
specified maximum level, to ensure compliance with regulatory agencies
standards.
SPECTRUM ANALYZER
TP30
C510
U501
C314
J2*
RF
GND
S302
RED
S301
GREEN
TPRF1
RF GND: FEED THRU
HOLE IN PCB
*R40 and J2 are placed for JA, JB frequencies only.
R40*
UC2 Transmitter Spectrum Analyzer
Power: ON Frequency: See Table 2
Operating freq: See Table 2 Span: 200 MHz
Group switch: See Table 2 Reference voltage: 20 dBm
Channel switch: See Table 2 Peak search: ON
Signal track: ON
Marker: ON
Figure 7. UC2 Power Output Measurement Test Set-Up
1. Remove the BNC cable end from the frequency counter and
connect it to the 50 Ω input of the spectrum analyzer.. Use the
equipment settings shown in Figure 8.
2. Measure the output power. The output power should be:
UA, UB, MB, MC, MD
frequencies:
16 + 1 / – 2 dBm
KK frequencies: 14 + 1 / – 2 dBm
For J frequencies, with C347 in place,
adjust R40 to obtain 8.8 ± 0.5 dBm.
3. Turn the UC2 power OFF.
4. Disconnect only the BNC end of the RF test cable from the
spectrum analyzer.
