Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL VF-8A RFL Electronics Inc.
August 6, 2010 2 (973)
334-3100
SPECIFICATIONS
As of the date this Instruction Data Sheet was published, the following specifications apply to the RFL
VF-8A Selective Calling Unit. Because all RFL products undergo constant improvement and
refinement, these specifications are subject to change without notice.
Configuration: One voice channel per module
Timeslots: Requires one user-selectable 64 kbps time slot
Frequency Response: 300 Hz to 3400 Hz: ±1.5 dB
Signal Levels: Input: -26 dBm to +9 dBm
Output: -26 dBm to +9 dBm
Impedance: 600 ohms input/output
Idle Channel Noise: Less than 23 dBrnc0
Peak-To-Average Ratio (P/AR):
Greater than 94
Signaling Format: T1 systems: RBS (Robbed-Bit Signaling)
E1 systems: CAS (Channel-Associated Signaling)
Dialing Method: DTMF for “station”, “group”, and “all” call
Audio Encoding/Decoding: μ-law for both T1 and E1 systems
Call Progress Tones: Dial Tone:
Frequencies: 350 + 440 Hz, nominal
Timing: Continuous tone
Line Busy Tone:
Frequencies: 480 + 620 Hz, nominal
Timing: Cycles of 0.5 seconds ON and 0.5 seconds OFF
Reorder Tone:
Frequencies: 480 + 620 Hz, nominal
Timing: Cycles of 0.25 seconds ON and 0.25 seconds OFF
Audible Ring Tone:
Frequencies: 440 + 480 Hz, nominal
Timing: Cycles of 2 seconds ON and 4 seconds OFF
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