Merlin Plus: General information on specifications for Merlin Plus Control Units

Merlin Administration

This article provides general information on specifications for Merlin Plus Control Units.

Comcodes:

Control Unit:

• Line jacks: 4 per line module, 8 max.
• Station jacks: 10 per line module, 20 max.
• Line Auxiliary jacks: 1 per line module, 2 max.
• Paging jack: 4 pair, only 2 pairs used.
• Music-on-Hold Interface: RCA phone type.

Dimensions:

• 16 inches H x 11 inches W x 7 inches D

Weight (approx.):

• 8 lb. (With one line and one station module).

Power:

• Input to control unit from AC outlet.
• 117 Volts AC ideal, range 99Vrms to 129 Vrms.
• 60 Hertz (Hz) 0.1 Hz.
• 1.4 Amps.
• 165 Watts.
• Merlin Control Unit looks for 23-35 milliamps on incoming line from Dial Tone Provider.
• Three-prong outlet with proper third wire ground, separately fused at 15 amps, not controlled by a switch.
• Battery Back Up should last 72 hours
• Underwriter's laboratory (UL) listed.

BTU Rating - 561

Surge Protection:

• External or internal depending on the configuration of the control unit.
• Systems are completely protected internally only if they have an 820D1 or 820D2 cabinet, a protected power supply and protected line modules. All three must be present.
• Cabinets are identified by the FCC label on the left outside panel and the metal grounding rail at the top.
• Power Supplies are identified by the amber on-off switch and ground lug.
• The Amber light should be lit when the switch is in the on position. If it is not lit, the outlet is dead, not wired properly or improperly grounded.
• Line Module is identified by the W/P sticker above the third line jack and the metal tab at the top of the line board.
• Systems require external protection with an 820D cabinet, when an unprotected power supply or an unprotected line module is present.
• 145A/146A/147A surge protectors should be installed on systems that are not fully protected.
• 145A/146A/147A surge protectors should not be installed on fully protected systems. If installed they should be removed and returned to the MSL.
• All components, 820D, 820D1 and 820D2 cabinets, protected and unprotected power supplies, and protected and unprotected line modules are completely compatible.

FCC Registration Number:

• AS593M-13529-KF-E.
• REN 0.8A.
• Fully Protected Key System under FCC Rules, Part 68.
• Complies with FCC Rules, Part 15, Subpart J for Class A computing device suitable for commercial use (likely to cause interference in a residential area).

Local Exchange Carrier (Dial Tone Provider) Interface/Universal Service Ordering Code (USOC)

Local Exchange Carrier Interface Jacks

• RJ11C (Single line jack).
• RJ14C (Two line jack).
• RJ21X (Multiline network interface).
• Merlin Control Unit looks for 23-35 milliamps on incoming line from Dial Tone Provider.

Switching Method:

• Analog, Space-Division.

Talk Paths:

• Intercom paths = 3.
• Simultaneous conversations = 11.

Line Type:

• 2 Wire Loop Start or equivalent.

Line Port Impedance:

• 600 Ohms.

Station Wiring:

• 4 pair (See also Wiring Case).
• Home Run/Star configuration-
• Max Distance from Control Unit 1000 feet with 24-gauge wire or equivalent.
• In range, out of building stations must be protected with IROB protectors.
• Off-premise circuit can terminate on Merlin Plus with two-wire loop start line into line jack.
• Merlin Plus can originate Off-premise station with the optional Merlin Off-Premise Module and an OL13C circuit from the Dial Tone Provider.

Environmental Factors:

• Temperature Range 40F-104F.
• Humidity Range 5%-80%.
• Avoid dust, moisture, and any other airborne contaminants.
• Avoid direct exposure to sunlight.
• Minimum 1 inch space for ventilation above and to the sides.
• Mounts vertically only.
• Tolerates Radio Frequency field strengths of up to two volts per meter without effect on performance.
  
  See attachments.