Оценок - 3, средний балл: 4.7
(
)
)
|
Фрагмент инструкции
There are 3 LED indicators to display the current selection. Back Panel The power pack connector is located at the right end of the back panel. This is a locking DIN connector. The remainder 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 DB-9F connector and an RJ-11 connector for 4-wire intercom connection. These are directly compatible with standard ADAM/Zeus keypanel cables. Next to the 4-wire connectors, there is a 3-pin female XLR audio connector for connection to the 2-wire intercom system. Specifications Specifications 2-Wire Ports Input / Output Impedance 5,000 ohms, nominal Operating Level Audiocom: 1 VRMS, nominal RTSTW/ClearCom: 775 mVRMS, nominal 4-Wire Ports Input Impedance 10k ohms, 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 3.5 kHz, ±4 dB THD: . 1% @ channel output with nominal input Environmental Operating Temp -20°C to 50°C (-4°F to 122°F) Storage Temp -40°C to 85°C (-40°F to 185°F) Humidity 0 to 95%, non-condensing Main Voltage 100 to 250 VAC, 50/60 Hz Dimensions 1.72” (44mm) High x 8.19” (208mm) Wide x 8.0” (204mm) deep Weight 5.0lbs (2.3kg) Finish Thermoplastic front panel, aluminum case, light gray finish Approvals UL, CSA, UDE, CD Specifications subject to change without notice. Description and Specifications Mounting Place the SSA-424A on a desktop, or install it in an equipment rack using an RTS MCP Rack Mount Kit. Several rack mount options are available. There are no special ventilation requirements for the SSA-424A, but allow for ventilation around the power pack. • If the SSA-424A has the call signal option, the power indicator flashes whenever a call signal is received from either 2-wire line, and activity on the level display helps to indicate which line is calling. If the SSA-424A is physically positioned near the 4-wire operator, this can be used as an incoming call indication for the 4-wire system, if desired (although other methods are available as described in “4-Wire Call Signal Connections” on page 8). NOTE: You may wish to read about the internal mode DIP switches before mounting the SSA-424A. For further information, see Table 1 on page 15. 4-Wire Audio Connections ADAM, ADAM-CS, or Zeus Audio Connection 1. Use standard 9-pin or RJ-11 keypanel cables. Connect from one port of your intercom system to J2A or J3A (System A connection) on the back of the SSA-424A. Connect from another port to J2B or J3B (System B connection). CHAPTER 2 Installation 2. On the SSA-424A front panel, set the 4W LEVEL REF SEL switches to the +8 dB position. Audio Connections for the Other 4-wire Communications Systems 1. Construct 9-pin or RJ-11 cables to connect from the 4-wire system to the SSA-424A. To connect to the System A hybrid, use either J2A or J3A; for the System B hybrid, use either J2B or J3B. Pin connections are as follows: 9-Pin Connection Connector Type: 9-pin male D-subminiature Pin 1 No connection Pin 2 No connection Pin 3 No connection Pin 4 Balanced Audio + 4-wire output Pin 5 Balanced Audio - 4-wire output Pin 6 No connection Pin 7 Balanced Audio - 4-wire input Pin 8 Balanced Audio + 4-wire input Pin 9 No connection RJ-11 Connection Connector Type: RJ-11 plug Pin 1 No connection Pin 2 Balanced Audio + 4-wire input Pin 3 Balanced Audio + 4-wire output Pin 4 Balanced Audio - 4-wire output Installation Pin 5 Pin 6 Balanced Audio - 4-wire input No Connection the audio input and output levels of your 4-wire system. If you don’t know the levels, select the +8 dB position for now. 2. On the SSA-424A front panel, set the 4W LEVEL REF SEL switches to the position which most closely matches FIGURE 2. Rack Mount Configurations 2-Wire Audio Connections RTS TW Audio Connections 1. Use standard TW intercom cables. Standard TW system cables can carry either one or two channels, while each hybrid in the SSA-424A can only interface one TW channel to one 4-wire channel, which channel is determined by the front panel 2W CHAN SEL switch. If your TW system cable is only carrying one channel, or if you only need to connect one of two channels, connect directly to J1A (System A) or J1B (System B). If your TW system cable is carrying two channels, and you want to connect to both, use a TW-5W or similar device as shown in Figure 3 on page 7. 2-Wire Audio Connections NOTE: The SSA-424A features internal DC isolation. You can therefore connect to the SSA-424A to powered TW cables, and it will not draw any power from the TW system. 2. On the SSA-424A front panel: For System A and System B, set the 2W CHAN SEL switch to the appropriate position. To interface to TW channel 1 select position 1; for TW channel 2, select position 2. NOTE: If the ...