Specifications
14
General
Power
8.5 - 11 VAC or 11.0 -15.0 VDC, draws 650 mA maximum, 300 mA nominal,
Optional wall transformer
DC Standby
Connection for standby power, 11.0 - 15.0 VDC, 650 mA maximum
Connections
Power supply, standby power, line interface (2- or 4-wire), PTT open drain output,
supervisor open drain output, external PTT input, external audio input, external
audio output, ground. Uses screw terminal connectors.
Temperature Range
0° - 60° Celsius, 95% relative humidity at +50°C (non-condensing)
Size / Weight
8.3"W x 4.4"H x 9.5"D
3 lb. (the Model 284 is 4 lb.)
Adjustments
Line Transmit level trim, the Model 284 has control for each line
Display
2-line by 16-character LCD indicates station status, time of day, transmit and
receive VU level, paging capcode entries, and operating prompts (paging, talk,
etc.) Alphanumeric labels (names) up to 16 digits may be assigned to each
frequency of each line [Model 284 = (F1 to F8)(4 lines) = 32 labels] The Model
284 has VOX, Select, Transmit, and LOTL indications for each line
LEDs
Transmit, Monitor, and programmable LEDs per switch function
Controls
Volume, Transmit, Monitor, 16-digit keypad for paging, Clear, and nine
assignable keys
Configuration
Done via PC with adapter, cable, and PC software (programming kit is optional)
Data Retention
Nonvolatile EEPROM
Functions
Assignable function tone frequencies from 650-2050 Hz; Single frequency select
(F1-F8), Double frequency select (F1/F2), Coded/Clear, Intercom, Privacy,
Repeat on/off, Rx2 Mute on/off, PL1, PL2, PL3, PL4, Wild I, Wild II, Supervisor
takeover, Mute, 5-beep Alert, High/Low Alert, Siren Alert, Fast-Siren Alert,
Steady Alert, Instant Call, Off-hook speaker mute, Hook disable, Call Decoder
Mute, and Monitor. The Model 284 has Unselect Mute.
Selective Calling
Two-Tone, DTMF, Five-Tone, and Pulsed Tone Dialing. Includes leading digit
multiformat selection, strapped digits, alert tones, tone-only or tone & voice per
format, gain and equalization curves selectable per format
Filters
Tx notch filter removes guard tone components from microphone audio; Rx notch
filter removes guard tone from speaker and handset audio. Intelligent audio
processing may be enabled so that parallel remote function tones are not heard
Tx Audio Delay
Selectable on/off to delay microphone audio during guard and function tone
transmission
Rx Audio delay
Selectable on/off to delay speaker and ear piece audio so that parallel remote
function tones may be detected and muted
Line Type
2-wire, or 4-wire, leased line voice grade audio circuit, or copper connection
Line Connector
Screw terminals
Audio Input
600
or 6000
impedance, accommodates line losses up to 20 dB
Audio Output
Adjustable up to +12 dBm into 600
Distortion
< 2% at full output, Signal-to-noise > 50 dB, Hum and Cross-talk all -50 dB at full
output
Frequency Response
-3 to +1 dB from 250-3000 Hz. (except for the guard tone notch)