Promax MC-377+ Instruction Manual page 62

INSTRUCTION MANUAL MC-377+.
MON./SPEC
[5]
Pressed key (MON.): Monitor Mode. The monitor [1] shows the demodulated
TV signal corresponding to the tuned frequency.
Released key (SPECT): Spectrum Analyser Mode. The monitor [1] shows a
frequency representation of the signal levels present in the band.
[6] SPAN/MAX
Selects bandwidth represented in the Spectrum Analyser mode:
Pressed key (SPAN mode): Variable bandwidth, modified by the SPAN
control [23].
Released key (MAX mode): Maximum bandwidth (shows the complete band)
[7] VLO LOW VHF band selector.
[8] VHI HIGH VHF band selector.
[9] UHF UHF band selector.
[10] SAT Satellite intermediate frequency selector.
[11] DIG Digital channels measuring mode selector.
[12] 22 kHz
Activates the 22 kHz square signal superimposed onto the external unit supply
voltage.
[13] VDC 0/13/18 V
[14] 10 dB Selects 10 dB attenuation in the terrestrial bands.
[15] 20 dB Selects 20 dB attenuation in the terrestrial bands
[16] 20 dB Selects 10 dB attenuation in the terrestrial and satellite bands.
When controls [14], [15] and [16] are selected simultaneously, the RF
attenuation is 50 dB in terrestrial bands.
[17] LINE
Light indicator. Indicates whether the instrument is connected to the mains.
[18] SHORT
Luminous indicator showing over-consumption by the external unit or short
circuit.
SAT
[19]
Satellite IF RF input and external unit powering (LNB) 0/13/18 V + 22 kHz
[20] DRAIN
Page 16
Operating mode selector:
(Operational only in Spectrum Analyser mode)
External units power supply selector.
Luminous indicator showing the external unit normal consumption.
May 2001