2241A Distribution Panel
GENERAL
Section 1
1 - 3
1-14 SPECIFICATIONS
AUDIO DISTRIBUTION AMPS
Frequency Range:
20 Hz to 5000 Hz
Tx Inputs:
8 Floating, Balanced, 600 Ohm
Sum Inputs
8 Floating, Balanced, 600 / Hi Z
Outputs:
24 Floating, Balanced, 600
Ohm
Gain:
0 dB, +/- 10 dB / 24 FP controls
I/O Return Loss:
Greater than 26 dB
Input/Output Level:
+10 dBm maximum
Noise:
Less than -60 dBmC
PTT CIRCUITS
Outputs:
24 High Current (100 mA) Outputs
E/M, TTL, or *Digitac / Relay Closure
Inputs:
24 E/M Type 1-5, TTL, or *Digitac
8 Inputs for distribution applications
M Type I,II,III: Key <-20 V / Idle >-20
V
M Type IV, V; E: Key >-20 / Idle <-20 V
TTL: Key < +2.5 V / Idle > +2.5 V
*
Digitac: Key < +6 V / Idle > +6 V
*
Digitac is a Trademark of Motorola Inc.
AUDIO / PTT DISTRIBUTION CONTROL
7 Switches:
1 Input to 24 Outputs, or
2 Inputs to 12 Outputs each, or
numerous other distribution options.
MANUAL PTT CONTROL
PTT Switches
24 (3 Position) Front Panel Switches
KEY
:
Keys transmitter / Lit Red
NORMAL
Console control / Lit Green =
PTT
DISABLE
Disables PTT / Lit Red
ENVIRONMENT:
-30 to 60º C, 95% R.H.
I/O CONNECTORS:
2 sets of 50 pin "Telco" type
DIMENSIONS:
1.7" H x 12" D x 19" W. / 6 lbs.
POWER
90-264 VAC; Order: 2241A-
AC
12
,
24
, or
48
VDC, Order: 2241A-
XX
10K
10K
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
PTT CIRCUIT
S66-S89
S8,S9
S18-S41
S42-S65
S90-S113
S7B
S6B
S5B
IN22
S7A
B7
IN19
S6A
B6
IN16
S5A
B5
IN13
S4A
B4
IN10
S3A
B3
S4B
S3B
S2B
S1B
IN7
S2A
B2
IN4
S1A
B1
BUS 1
(STATION BATTERY)
S17
S16
S15
S14
S13
S12
S11
S10
M:IV,V,E
M:I,II,III
HI Z
HI Z
HI Z
HI Z
HI Z
HI Z
HI Z
HI Z
600
600
600
600
600
600
600
600
GND/SG
26-49
1-24
PTT OUT
BLOCK DIAGRAM / PTT CIRCUIT
-48/SB
26-49
PTT IN
1-24
25,50
DET GND
E/M SEL
DETECT
KEY
INPUT
LOGIC
CONTROL
PTT
OUTPUT
PTT
LOGIC
DET GND
25,50
(FRONT PANEL)
RED
RED
DISABLE
NORM
KEY
OFF
ON
DIST OUT
DIST IN
(INVERT)
+12
+12
+5
+5
E/M
E/M
TTL
TTL
DIG
DIG
23
22
23/48
22/47
20
20/45
19
19/44
17
17/42
16
16/41
14
13
14/39
13/38
11
10
8
7
11/36
10/35
8/33
7/32
12
11
10
9
8
7
5/30
5
4
2/27
2
BLOCK DIAGRAM / 2241A AUDIO / PTT DISTRIBUTION PANEL
PUSH TO TALK CIRCUITS
OUTPUT / PINS
PINS / INPUT
24
23
22
21
20
19
18
17
16
15
14
13
600 OHM, BALANCED RECEIVERS / DRIVERS
24
24
23
23
22
22
21
21
20
20
19
19
18
18
17
17
16
16
15
15
14
14
13
13
PTT
12
12
11
11
10
10
9
9
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
AUDIO
4/29
24/49
23/48
22/47
21/46
20/45
19/44
18/43
17/42
16/41
15/40
14/39
13/38
PINS
OUTPUT
INPUT
PINS
1/26
12/37
11/36
10/35
9/34
8/33
7/32
6/31
5/30
4/29
3/28
2/27
1/26
1
6
5
4
3
2
1
