Required Components
Power supply for one SI30 or SZI30
0
2
1
-
1
-
0
2
T
N
A
m
0
0
2
,
C
D
V
4
2
Power supply for up to four SI30
and SZI30 24VDC, 500mA (requires KKY20-015) NT20-4-120
RF connection cable (2x 1/8” jack); 3.9”
KR20-015
Mounting clamp (one required for
0
2
K
Z
I
0
3
I
Z
S
d
n
a
0
3
I
S
h
c
a
e
Supplied Accessories
1 x AF connection cable, 1/8" stereo
jack plug to Texas connector, length 2 m
S46562
1 x 1/8 to 1/4" stereo jack adapter
Coverage area of the SI 30 / SZI 30
Polar pattern of the SI 30/SZI 30
Four SZI 30, mounted at an angle of 60° to one anoth-
er. For comparison purposes, the coverage of a single
SZI 30 is shown at 30°.
Architect’s Specifications
Optional Accessories
RF extension cable, 24.6’
KR 20-7
AF extension cable, 3.28’
KK 20-1
AF extension cable, 24.6’
KK 20-7
4-way “octopus” cable (Texas connectors)
KKY20-015
Mounting hardware for clusters of 2 to 4
0
2
M
Z
I
0
3
I
Z
S
d
n
a
0
3
I
S
Wall/ceiling mount, 5/8” thread
WM1
Adapter, 5/8” to 3/8”, for mounting a
6
1
2
A
Z
M
0
3
I
Z
S
r
o
0
3
I
S
e
l
g
n
i
s
Compatible Accessories
Single channel stethophone receiver
RI250/RI250-J/RI250-S
Two channel stethophone receiver
HDI302
Charger and power supply for 10 batteries
L151-10 and NT92-120
Charger and power supply for 11-50 batteries
L151-10 (one for every 10 batteries)
NT2013-120
Spare rechargeable batteries
BA151 NiMH
Latex replacement ear cushions
EP405L
SI 30
The unit shall be a wideband infrared modulator with a nominal deviation of ±50 kHz. The
Carrier frequencies must be 2.3 and 2.8 mHz. The unit must have a 3-pin Texas socket AF
input with a 45 mV–4 V input voltage for nominal deviation. The AF frequency response
must be 30–18,000 Hz, with THD equalling
≤
1%. The AF signal-to-noise ratio shall be
≥
60
bd(A) rms. The output impedance shall be approx. 50
Ω
. There shall be 11 diodes. The
max. coverage area shall be approx. 80 m, with a radiating power of approx .5 W. The
operating voltage shall be 24–27 DC via 2-pin Texas socket. The current consumption shall
be approx. 180 mA. The dimensions shall be approx. 4.64 x .98 x 3.54 and weigh approx.
4.93 oz The unit shall be a Sennheiser SI 30.
CBinder - Information Systems.indd 40
11/11/08 11:50:10 AM
