Marconi - TF 2300 - Level Meter
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Marconi TF 2300
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Equipment:
TF 2300
Date:
1969
Category:
Group:
Sub Group:
Information
The TF2300 Modulation Meter is primarily for measurement of
f. m. deviation but it also measures a.m. depth. With its
wide range of deviation frequency, modulation bandwidth and
carrier frequency, this instrument is suitable for
application to fixed and mobile point-to-point
communications, broadcasting, telemetry and multi-channel
link equipment in the h. f. , v. h. f. and u. h. f. bands.
Distortion and channel separation tests on f. m. stereo
receivers and transmitters can also be made.
Positive and negative f. m. deviation can be measured in
ranges from 5 kc/s to 500 kc/s full-scale at modulation
frequencies between 30 c/s and 150 kc/s. A. M. depth can be
measured up to 95% in a 30 e/s to 15 kc/s modulation
bandwidth. Either f. m. or a. m. can be measured in
the presence of the other. Although measurements are
normally made by means of the meter readout, i. f. and
demodulated outputs are available at the front panel for
examination or analysis.
Spurious a. m. and f. m. due to hum and noise are kept to a
level insignificant for most applications but, where
required, crystals can be switched in to control the local
oscillator, or an external local oscillator may be used. The
instrument can be operated without a local oscillator for
measurements in the 1-2 Me/s range.
The instrument can be operated from mains power or a nominal
24 V battery. Voltage regulation eliminates transformer tap
changing except between 115 V and 230 V ranges. On battery,
the regulation compensates for battery voltage variations
between 21.5 and 30 V. Transistorized circuits consuming
little current give reasonable length of operation on
battery for mobile purposes.
2 Manuals
Service and user manual
Manual type:
Service and user manual
Pages:
74
Size:
3.8 MB
Language:
english
Revision:
Manual-ID:
EB 2300 Id
Date:
Quality:
Scanned document, all readable.
Upload date:
May 28, 2016
MD5:
5171af2b-b176-d719-c23a-4aa19d5167f7
Downloads:
432
Service and user manual
Manual type:
Service and user manual
Pages:
67
Size:
6.2 MB
Language:
english
Revision:
Manual-ID:
Date:
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
June 5, 2016
MD5:
437014ca-9517-6d69-f38b-b4f24b9b1560
Downloads:
511