Shure R2 User Manual Supplement page 3

U1 Transmitter Input (Figure 1)
Connector:
Input Configuration:
Actual Impedance:
Maximum Input Level:
TA4F Connector Pin
Assignments:
LEMO Connector
Pin Assignments:
Voltage for Remote Power:
MICROPHONE
ELEMENT
NOTE: LAVALIER MIC TIES PINS 3 AND 4
TOGETHER; GUITAR CABLE DOES NOT.
U1 Transmitter Output
Connector:
Actual Impedance:
Nominal Output Level:
Maximum Output Level:
Pin Assignments:
4-pin miniature (TA4F) or LEMO
18 kΩ with lavalier microphone
6 Vp–p (+7 dBV) for 1% THD at minimum gain
Pin 4: Tied thru 20kΩ Resistor to Ground.
(On instrument adapter cable, Pin 4 floats)
Pin 1: Tied to Pin 3 and 10 kΩ to Ground
Pin 4: Tied to Shield (Ground for Positive Bias)
+5 V supplied to microphone cartridge
2
2
4
4
3
3
1
1
U1L (LEMO 4 PIN) MIC JACK BOARD
499 Ω
1
499 Ω
2
10K Ω
3
4
FIGURE 1
3
Unbalanced, active
1 MΩ with instrument cable
setting using 1 kHz signal.
Pin 1: Tied to Ground
Pin 2: Tied to +5 V
Pin 3: Tied to Audio
Pin 2: +5V
Pin 3: Tied to Pin 1
U1 MIC JACK BOARD
500 Ω
20K Ω
500 Ω
27 pF
AUDIO
27 pF
BIAS
27 pF
SHIELD
SMC
50 Ω
+10 dBm
+11 dBm
Shell = Ground
Center = Signal
+5 V
27 pF
AUDIO
GROUN
D