Remote Control Console
74
11
.
Specifications
Panel Switch-Selectable lines:
1-24.
Sequential tone line input and output impedance:
Two-Wire: 600, 1200, 1800 or 2400-ohm, jumper selectable, transformer isolated,
Four-Wire TX Line: 600 ohm 1200, 1800 or 2400 ohm, jumper selectable, transformer isolated,
Four-Wire RX Line: 600 or 10K ohm jumper selectable, transformer isolated,
E & M keying,
Each Line Input Level:
-30 V to +15 V, adjustable.
Each Line Output Level:
-20 V to +10 V into a 600-ohm line, adjustable (high-level guard tone only).
Audio Compression (selected and Unselected receive and transmit):
Less than 3-db change in output level
for a 30-db change in input above threshold.
Distortion:
3% maximum at full compression.
Hum and Noise:
50 db below operating levels.
Speakers (two):
4 in, 8 ohm, heavy-duty.
Amplifier Power:
5 W maximum at 3% THD into an 8 ohm load or equivalent
Optional Handset Earpiece Level:
Adjustable preset level independent of speaker volume controls.
Audio Frequency Response:
+ 1/-3 db, 300 to 3000 Hz, except at the transmit tone notch frequency.
Line-Activity Monitors:
Sensitivity: -30 to -5 V line, adjustable
Off Delay: 5 sec
Flash Rate: 2.5 Hz
Notch Filters (two per line card):
2175 Hz, 45-db typical attenuation.
Tone Frequencies:
PTT/guard-2175 Hz, Monitor-2050 Hz, F1-1950 Hz, F2-1850 Hz, F3-1750 Hz, F4-1650 Hz,
F5-1550 Hz, F6-1450 Hz, F7-1350 Hz, F8-1250 Hz, F9-1150 Hz, F10-1050 Hz, F11-950 Hz, F12-850. Ac 1
Hz.
Instant-PTT Switches:
momentary.
Select All (simulcast):
Selection of all sequential tone lines, and any dial-up cards currently on hold, both
transmit and receive.
Time mute:
temporarily mutes “Unselected” audio.
Group select:
for easy selection of TX/RX line combinations.
Front Panel Switch Functions:
Display Unit
Crosspatch selection:
(Select-Block-PTT)
Transmit (PTT)-Select Volume-control
Switch Bus Module:
Line Select, Unselected, Line Release, Instant PTT
End Bus Module:
Line Select, Unselected, Line Release, Instant PTT
Unselect Volume Control
Operating Temperature Range:
0 to +50 degree C.
Power Requirements:
.120/240 Vac, 50/60 Hz, 35-w maximum or 12 to 15 Vdc at 8 A maximum
Microphone Connection:
Handset and Headset 4-wire; Desk and Gooseneck use 6-wire
Dimensions (inches):
Model
Height Depth
Width Approximate Shipping Weight
C-6124-6:
10.5
6.0
19
35 lb.'s
C-6124-12:
"
"
25
40 lb.'s
C-6124-18:
"
"
31
47 lb.'s
C-6124-24:
"
"
37
55 lb.'s
