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2Q-
63
63-
630
63Q- 6300
630Q-20000
Programme 4 combines the ranges P
1
and P
2 ,
P
3
and P
4 ,
and also P
5
and
P
6 .
This gives a total of three ranges.
20-
200
20Q- 2000
2000-20000
Remote Control of 8 & T Programmes
Remote control of the B & T Programmes is only possible if the V.C.O. is
driven by an external voltage, and the frequency scale pointer is in the
passive zone (i.e. blank portion of the scale).
A socket (EXT.
B
& T PROGRAM) on the rear panel of the
2010
enables
the B & T Programme switch-over frequencies to be remote controlled. The
pin connections to the socket are shown in Fig.5.9.
Having selected the desired programme using the three switches, B, T,
and B & T PROGRAM, a switch-over is effected by shorting the appropriate
pin to the centre terminal (ground)', (see Fig.5.9). The switching from one
set of conditions to another may be carried out at any frequency .
.___ _ _ P,
_
_... _ _ Ground
777¥0/
Fig.5.9. Pin connections of the EXT. 8 & T PROGRAM Socket (Viewed
Externally)
54
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