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2.2.
REAR PANEL
FUSES:
MAINS VOLTAGE:
AC MAINS INPUT:
TRIGGER INPUT:
TRIGGER OUTPUT:
-
,l
V
-
11. "READY". These are normally switched off. They provide the same
information as 1. and 2. Either or all of 1., 2., 10. and 11. may be
used to
indicate
that the filter is ready.
Behind the Display is placed an electro-illuminescent panel which pro-
vides a pleasant green backlight. In bright environmental illumination
the display appears as dark figures on a light grey background. When
room lightning is reduced
-
as is often the case in ENT clinics
-
the
green backlight dominates and provides a clear contrast to the dark
letters and figures.
Tu99oi<
'°*'"'
Ch.tP\lt
-
@@
•
•
-
Fig. 2.3.
Rear panel of Rhino-Larynx Stroboscope Type 4914
2
Fuse
holders, accepting two 2,5 A, 250 V slow blow fuses (B & K No.
VF 0060) for 100 to 127 V mains operation or two 1,25 A, 250 V slow
blow fuses (B & K No. VF 0027) for 200 to 240 V mains operation. To
check and fit the appropriate fuses, see section 3.1.3.
6-position switch for selection of the correct mains voltage setting as
described in section 3.1.3.
2-pin socket accepting the Power Cable AN 0020 provided for connec-
tion to a 100, 115, 127, 200, 220 or 240 V
±
10% (50 to 60 Hz) single
phase AC mains supply. Before connecting a supply, the mains voltage
setting and fuse checks given in section 3.1.3 should be carried out to
ensure safe operation of the instrument.
Equipotential Screw connected to a main equipotential bonding con-
ductor when required by relevant local standards.
2-pole coaxial socket accepting standard BNC plugs for triggering via
an external source. Input voltage 1 -1 O V RMS, input impedance 1 O kn.
(Transformer input).
2-pole coaxial socket accepting standard BNC plugs. Output signal
(floating) is 1
O
V, 14
µs
positive pulses, output impedance approx.
115
Q.
5
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