Promax MC-577 Manuel D'utilisation page 58

SPAN/MAX
[6]
Selects bandwidth represented in the Spectrum Analyser mode:
Pressed key ( SPAN mode): Variable bandwidth, modified by the SPAN
control [24].
Released key ( MAX mode): Maximum bandwidth (shows the complete band)
[7] VLO
LOW VHF band selector.
VHI
[8]
HIGH VHF band selector.
UHF
[9]
UHF band selector.
SAT
[10]
Satellite intermediate frequency selector.
[11] DIG
Digital channels measuring mode selector.
22 kHz
[12]
Activates the 22 kHz square signal superimposed onto the external unit supply
voltage.
VDC 0/13/18 V
[13]
External units power supply selector.
[14] 20 dB
Selects 20 dB attenuation in the terrestrial bands.
20 dB
[15]
Selects 20 dB attenuation in the terrestrial bands
[16] 10 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.
When controls [15] and [16] are selected simultaneously, the RF attenuation is
30 dB in satellite band.
LINE
[17]
Light indicator. Indicates whether the instrument is connected to the mains.
BATT
[18]
Indicator remains lit when the meter is connected to the input [22] 12V
Only for battery charging
Page 14
(Operational only in Spectrum Analyser mode)
USER'S MANUAL MC-577.
05/2003