Olson Technology OTM-4870 - Manual (Page 10)

025-000412 Rev. B Page 10
EXT SUB IN
External aural subcarrier input. This input is selectable from the front panel. The input level (at 4.5 MHz for
NTSC versions) should be +45dBmV (measured into 75
Ω
). The OTM-4870 has limiter circuitry to keep the
aural carrier constant over this range in the external subcarrier signal level.
AC LINE POWER INPUT
The OTM-4870 may be powered by 90 to 240 VAC and 47-63HZ and it draws about 30 Watts.
6) MISCELLANEOUS
A) When mounting the OTM-4870 in an equipment rack, it is best to leave a blank space above and below the
unit to allow for adequate flow of cooling air.
B.) This unit is equipped with a 0.5A slo-blo fuse which is located at the IEC power input module at the rear
panel. For continued safety and to maintain proper performance of the unit, please replace only with an
equivalent fuse.