RADIOMETER BKF10, Operating Instructions Manual

Page: 4 / 8

REAR PANEL - CONNECTORS
IV/OlCAOl
220\1
®
e
e-�
MY-et.,.
@ .......
Fig. 5.
21. Jacks for connection of external dc
analogue voltages for external control
of frequency and output level.
Ja:ck 21a.
OUTPUT FREQUENCY. 0 to +3 V dc
between jacks (21a) and (22) chang­
es frequency at OUTPUT from 20
Hz to 20 kHz (1 V/decade), with os­
oillator function switch (8) set to
EXT., input resistance >1 MO.
Expression: Vdc = log [Volt)
20 Hz
Jack 21b.
AMPLITUDE. A dc analogue voltage
between jacks (21 b) and (22) chang­
es level
as
given in I and
11
below
with LEVEL CONTROL switch (16)
set to EXT., input resistance> 1 MQ.
I. With LEVEL AT switch (17) set
to OUTPUT, the level at OUTPUT
changes from 1 V to 1 mV (1 V/de­
cade) with analogue voltage of 0 to
-3 V dc.
Vouput
Expression: Vdc = log
1 V
[Volt)
11.
With LEVEL AT switch (17) set
to INPUT, level at INPUT changes
from 3 V to 10 mV (1 V/decade) with
an analogue voltage of + 0.48 V to
-2 V dc.
Expression: Vdc = log
[Volt)
Jack 21c.
3 V BIAS. dc bias voltage for re­
cording, etc., output resistance <10,
max. load 5 mA.
lVlOlCAGI
22. Four common signal GROUND jacks.
23. Jacks for connection of dc analogue
output voltages to recorder, etc:
All output resistances <1 0, max.
loads 4 mA.
Jack 23d.
OUTPUT FREQUENCY, dc analogue
voltage of oscillator output frequen­
cy: +3 V at 20 kHz to 0 V at 20 Hz,
1 V/decade.
f
Expression: Vdc = log
--
[Volt)
20 Hz
Jack 23e.
INPUT FREQUENCY, dc analogue
voltage of INPUT FREQUENCY me­
ter: +3 V at 20 kHz to 0 V at 20 Hz,
1 V/decade.
f
Expression: Vdc = log -- [Volt)
20 Hz
Jack 23f.
DISTORTION - SIN
-I,
dc analogue
voltage of DISTORTION meter:
I. -4 V at 0.01% to -1 V at 10%,
1 V/decade.
11. With SIN button depressed: -4 V
at -80 dB to -1 V at - 20 dB signal­
to-noise ratio, 1 V/20 dB.
Expression: Vdc = log k [Volt)
k = distortion factor (100%-k=1)
Jack 23g.
INPUT/OUTPUT RATIO, dc analogue
voltage of INPUT/OUTPUT RATIO
meter: -2 V at -40 dB to +3.5 V at
70 dB, 1 V/20 dB.
Expression: Vdc = log
Vinput
[Volt)
Vouput
24. Line voltage selector.
25. Line supply fuse.
26. Line cord receptacle.
27. AF frequency output (BNC) from band­
stop filter (harmonics only with funda­
mental freq. rejected). Intended for
connection to oscilloscopes, etc.
28. Multiconnector. All dc analogue volt­
ages, both for external control and
for recording, are also available here
for connection to accessories, e.g.,
the Radiometer REC61 S2 Servograph.
For details of the individual pin con­
nections, see page 5.
29. Cooling fins. The BKF10 should be
placed so that adequate ventilation is
possible, particularly when mounted in
racks and cabinet systems.
30. Ground jack
-+-
This jack is used to
ground the instrument if it is not ground­
ed via the power cord.