Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL VF-5C RFL Electronics Inc.
October 8, 2012 13 (973)
334-3100
remote end will automatically de-activate after two minutes. Any time during the two
minute time out period you can manually deactivate the remote loopback by
momentarily injecting the 2713 Hz signal for at least one second.
12. Select Channel 2 loopback mode by using DIP switches SW3-7, SW3-8 and SW1-10.
13. Set DIP switches SW4-1 through SW4-7 (Channel 1), and DIP switches SW8-1 through SW8-7
(Channel 2) to the nominal transmit level. The valid range is +10dBm to –23dBm. See Table 4
for reference.
For example if the nominal incoming audio (analog) TLP is –16dBm , then the
Switches should be set for –16dBm. This will provide a nominal 0dBm0 on the
DS0, which leaves approximately 3dB of headroom. In this case the peak transmit
TLP would be –13dBm. The factory default is –16dBm transmit (analog in)
DIP switches SW4-1 to SW4-7 are labeled as follows:
SW4-1 +/-
SW4-2
16
SW4-3 8
SW4-4 4
SW4-5 2
SW4-6 1
SW4-7 0.5
The switch settings are cumulative. For example, to set the nominal transmit level to
-16dBm, set the switches as follows:
Section
Value Setting Set Value
SW4-1 +/- ON -
SW4-2 16 ON 16
SW4-3 8 OFF 0
SW4-4 4 OFF 0
SW4-5 2 OFF 0
SW4-6 1 OFF 0
SW4-7 0.5 OFF 0
_______
Nominal transmit level setting = -16dBm
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