Shure KA (854–862 MHZ) User Guide
UHF Wireless System
KA (854–862 MHZ)USER GUIDE SUPPLEMENT
CONTENTS
SPECIFICATIONS 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Furnished Accessories 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Accessories 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement Parts 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FREQUENCY LISTS 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Groups 1 and 2 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Additional Compatible Frequency Sets for Group 1 8. . . . . . . . . . . . . . . .
Groups 3 and 4 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Master List (Groups A1–A3) 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2000, Shure Incorporated
27A8593 (TC)
Printed in U.S.A.
SPECIFICATIONS
RF Carrier Frequency Range
854–862 MHz
Working Range
152.4 m (500 ft), minimum, under typical conditions; 487.6 m (1600 ft ) line of sight
NOTE: Actual working range depends on RF signal absorption, reflection and
interference
Audio Frequency Response
50 to 15,000 Hz, ±2 dB. NOTE: Overall system frequency response depends on the
microphone element
Gain Adjustment Range
U1: 0 to 40 dB
U2: 0 to 26 dB
Modulation
±40kHz deviation compressor-expander system with pre-and de-emphasis
RF Power Output
U1, U2: 10 mW maximum
Dynamic Range
>102 dB, A-weighted
RF Sensitivity
U4S U4D
–110 dBm
12 dB SINAD
–105 dBm
30 dB SINAD
Image Rejection
90 dB typical
Spurious Rejection
75 dB typical
Ultimate Quieting (ref. 45 kHz deviation)
>100 dB, A-weighted
Audio Polarity
Positive pressure on microphone diaphragm (or positive voltage applied to tip of
WA302 phone plug) p roduces p ositive voltage o n p in 2 w ith r espect to pin 3 o f l ow
impedance output and the tip of the high impedance
System Distortion (ref. ±45 kHz deviation, 1 kHz modulation)
0.3% Total Harmonic Distortion typical
Power Requirements
U1, U2: 1.5V AA alkaline battery (Duracell MN1500 recommended); Nicad optional
U4: 90 to 230 Vac , 50/60 Hz
Power Consumption: 9.6 W min., 13.2 W max. (U4S)
12 W min.,16 W max. (U4D)
15 W min., 16 W max. (UA840)
Battery Life (Typical)
12 hours (with Duracell MN1500 1.5V AA alkaline battery)
Operating Temperature Range
-20° to 50° C (-4° to 122° F) NOTE: Battery characteristics may limit this range
–107 dBm
12 dB SINAD
–102 dBm
30 dB SINAD
1
/4-inch output
2
Overall Dimensions
U1: 92.2 mm L x 64.7 mm W x 24.2 mm D (3–29/32 x 2–35/64 x 61/64 in.)
U2/58:254 mm L x 50.8 mm Dia. (10 x 2 in.)
U2/BETA 58: 254 mm L x 53.2 mm Dia. (10 x 2–3/32 in.)
U2/87:228.6 mm x 49.2 mm Dia. (9 x 1–15/16 in.)
U2/BETA 87: 216 mm L x 50.8 mm Dia. (8–1/2 x 2 in.)
U4S/U4D: 44.5 mm H x 482.6 mm W x 295.3 mm D (1–3/4 x 19 x 11–5/8 in.)
Net Weight
U1: 175.2 g (6.1 oz.) without battery
U2/58, U2/BETA 58: 375.6 g (13.2 oz.) without battery
U2/87, U2/BETA 87: 303.1 g (10.7 oz) without battery
U4S: 3.30 kg (7.27 lbs)
U4D: 3.85 kg (8.48 lbs)
Certification
U1, U2: EMC Approved to ETS 300 445. RA T ype Approved in the U.K. to MPT1350.
U4S, U4D: VDE Certified to EN 60 950. EMC Approved to ETS 300 445. Meets Low
Voltage Directive.
UHF Type Approved and EMC Approved systems are eligible to carry the CE
marking.
U1 Transmitter Input (Figure 1)
Connector:
Input Configuration:
Actual Impedance:
Maximum Input Level:
6 Vp–p (+7 dBV) for 1% THD at minimum gain
Switchcraft TA4F Tini Q.G. or
LEMO connector (optional)
Unbalanced, active
18 kΩ with lavalier microphone
1 MΩ with instrument cable
setting using 1 kHz signal.
Pin 1: Tied to Ground
TA4F Tini Q.G. Connector Pin
Assignments:
Pin 4: Tied thru 20kΩ Resistor to Ground.
Pin 2: Tied to +5 V
Pin 3: Tied to Audio
(On instrument adapter cable, Pin 4 floats)
Pin 1: Tied to Pin 3 and 10 kΩ to Ground
LEMO Connector
Pin Assignments:
Pin 2: +5V
Pin 3: Tied to Pin 1
Pin 4: Tied to Shield (Ground for Positive Bias)
Voltage for Remote Power:
+5 V supplied to microphone cartridge
U1 Transmitter Output
Connector:
Actual Impedance:
Nominal Output Level:
Maximum Output Level:
Pin Assignments:
SMC
50 Ω
+10 dBm
+11 dBm
Shell = Ground
Center = Signal
3
MICROPHONE
ELEMENT
NOTE: LAVALIER MIC TIES PINS 3 AND 4
TOGETHER; GUITAR CABLE DOES NOT.
U1 MIC JACK BOARD
2
2
4
4
500 Ω
3
3
1
U1L (LEMO 4 PIN) MIC JACK BOARD
1
500 Ω
27 pF
20K Ω
27 pF
+5 V
AUDIO
GROUN
D
1
2
10K Ω
3
4
499 Ω
499 Ω
AUDIO
27 pF
BIAS
27 pF
SHIELD
FIGURE 1
U2 Transmitter Input
Input Configuration: Unbalanced, active
Actual Impedance: 20 kΩ
Maximum Input Level: 3 Vp–p (0.5 dBV) for 1% THD at minimum gain
setting using 1 kHz signal.
U2 Transmitter Output
Connector:
Actual Impedance:
Nominal Output Level:
Maximum Output Level:
Pin Assignments:
SMC
50 Ω
+10 dBm
+11 dBm
Shell = Ground
Center = Signal
4
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