Table of Contents
Advertisement
1.3 FRONT AND BACK PANEL DESCRIPTIONS
1.3.1 Front Panel
There is a power on/off and call indicator at the left of the
front panel. This indicator lights continuously when the
SSA-424 is turned on and flashes when an incoming call
signal is detected. The remainder of the front panel is di-
vided into controls and indicators for the two separate hy-
brids, labeled SYSTEM A and SYSTEM B. For each
hybrid, there is a 10-segment, peak reading level meter to
display the 4-wire output level (TO 4W). There is a re-
cessed level set control to the left of the 4-wire meter
(LEVEL SET) and there is also a recessed, 5-position
range select control for the 4-wire output (4W LEVEL
REF SEL). Under the 4-wire meter, is an identical meter
for the 2-wire output level, and there is a recessed level
set control for the 2-wire output to the left of the meter.
Under the 2-wire meter, there is a recessed, 5-position se-
lector. The selector has two OFF positions for when no
2-wire input is connected. The three remaining switch po-
sitions select the 2-wire system as follows: position 1 se-
lects RTS TW channel 1; position 2 selects RTW TW
channel 2 or a Clear-Com channel; the BAL position se-
lects an Audiocom balanced channel. There are 3 led indi-
cators to display the current selection (2W CHAN SEL).
1.3.2 Back Panel
The power pack connector is located at the right end of
the back panel. This is a locking DIN connector. The re-
mainder of the back panel is divided into connectors for
the two separate hybrids. Connectors are labeled with "J"
numbers followed by "A" or "B" to indicate system A or
system B. For each hybrid, there is an AUX connector.
This is used to connect to / from the optional call signal
card. Below the AUX connector, there are both a DB9F
connector and an RJ11 connector for 4-wire intercom
connection. These are directly compatible with standard
ADAM / Zeus keypanel cables. Next to the 4-wire con-
nectors, there is a 3-pin female XLR audio connector for
connection to the 2-wire intercom system. The pin-out of
this connector is determined by the position of the TW
CHAN SEL control on the front panel.
6 User Instructions, SSA-424 Dual Digital Hybrid
1.4 SPECIFICATIONS
2-Wire Ports
Input / Output Impedance: 5,000 ohms, nominal
Operating Level: -10 dBu to 0 dBu, nominal
Level Adjustment Range: ± 12 dB
4-Wire Ports
Input Impedance: 10 kohms, nominal
Output Impedance: 200 ohms
Operating Levels: -10 dBu, 0 dBu, +4 dBu, +8 dBu,
+12 dBu
System to System
Frequency Response: 200 Hz to 4.5 kHz, +1 / -6 dB
S/N Ratio (Ref 1 kHz, 0 dB @ 2-wire): TBD
Crosstalk: TBD
Environmental
Operating Temperature: -20°C to 50°C
Storage Temperature: -40°C to 85°C
Humidity: 0 to 95%, non-condensing
Mains Voltage
100 to 250 VAC, 50 / 60 Hz
Dimensions
1.72" (44mm) high x 8.19" (208mm) wide x 8.0"
(204mm) deep
Weight
5.0 lbs. (2.3 kg)
Finish
Thermoplastic front panel, aluminum case, light gray
finish
Approvals
UL, CSA, UDE, CE
Specifications subject to change without notice.
Advertisement
Table of Contents
