Promax PROMAX-4, User Manual

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USER’S MANUAL. PROMAX-4
Page 2 Novembre 1999
1.2 Specifications
TUNING
Tuning range
From 45 to 862 MHz.
Tuning mode By channels, frequency or program (maximum 64).
Channel plan
CCIR
(1) (2)
.
Frequency 62.5 kHz resolution.
Programs Storage of frequencies and channels from the
keyboard
(1) (2)
.
Number of programs Maximum of 64 programs. Limitition on number of
programs from 64 to 1
(1) (2)
.
Indication LCD alphanumeric display with back lighting.
LEVEL MEASUREMENT
Measurement range
From 20 to 120 dB
µ
V. (from -40 dBmV to 60 dBmV)
(3)
.
Read
Digital in dBµV (or dBmV
(1) (2)
). 1 dB resolution
Attenuator
Automatic or manual
IF bandwidth 230 kHz
±
50kHz
Input impedance 75
Ω
Audible indicator Tone which varies with the signal level.
Accuracy
±
2 dB (from 0 to 40
°
C) for negative video
modulation
(5)
.
VIDEO / AUDIO
Measurement
Ratio of video to audio carrier levels.
Range From 0 to 40 dB
Audio subcarrier frequency
Standard 5.5 MHz
(1) (2)
.
Variable 4-9 MHz.
Accuracy
± 2 dB (from 0 to 40
°
C) for FM audio carrier
(6)
.
CARRIER / NOISE
Measurement
Ratio of the carrier level to the noise level in the
channel.
Max. dynamic range
50 dB (80 dBµV reference input level) (see
appendix E).
Accuracy
±
3 dB typical (see appendix E)
SOUND
Demodulation
AM / FM
Output Internal speaker / external headphones.
POWER SUPPLY
NiCd battery
7.2 V – 0.80 Ah.
Low battery indication Indication on the display
Battery life 1 hour and 45 minutes (30 % on / off).
Automatic cut-off Cut-off after approximately 12 minutes of non-use.
Mains to charger adapter 230 V / 50-60 Hz / 12 W minimum (EUROPE and
other countries).
Battery charger By fast external adapter. 12-16 VDC / 12 W.
Equipment consumption 3 W.