Promax PROMAX-4, Руководство пользователя

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USER’S MANUAL. PROMAX-4
Page 12 Novembre 1999
[6] Connection to computer (for option RM-004)
0CA2170 specific connection cable supplied with option RM-004
Do not connect any cable other than that supplied by the
manufacturer with option RM-004, otherwise the instrument may suffer
serious damage.
[7] Speaker
[8] Volume control
[9] External headphones connector
AT T
F C P
V /A
C /N F C T S T O
P R O M A X -
4
1 6
1 0 1 5
1 3 1 4
11
1 2
Figure 5.- Keyboard of the PROMAX-4
[10] Manual or automatic attenuation switch. The input attenuation may be selected
from 0 dB up to 70 dB in 10-dB steps. In the AUTO mode, the instrument selects
the best attenuation as a function of the signal level in the input of the instrument,
in order to centre the value of the reading in the optimal scale.
[11] Program storage (maximum of 64). Press this key to store the configuration in the
memory.
[12] ON/OFF. Connects/disconnects the instrument and allows the user to select
automatic or manual cut-off.
[13] Special functions
F1: Sound AM / FM / LEVEL / OFF
F2: Sound subcarrier tuning from 4 - 9 MHz
[14] Measurement of the carrier-to-noise ratio. Press this key to measure the
carrier-to-noise ratio of the signal, once the video carrier level is stabilized.