Casella CEL CEL-393 - Manual (Page 40)

The following outputs are provided in all versions of the instrument.
AC
Warning
Do not insert two-pole plugs into this socket as they
could damage components located immediately be-
hind it.
This is a conditioned AC output from an impedance of 3k3 ohms at a
level of 2.3V RMS for full scale deflection. It is a standard single pole
2.5mm jack socket located on the side of the instrument (see Figure 3).
DC
A log DC output with a nominal value of 75mV/dB is provided on pin 10
of the connector (see Figure 7). This output also has a source impedance
of 3k3 ohms.
Figure 7 Auxiliary socket, pin number & function
890019
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15. Out 3
Stop paper
Stop pen
Not connected
Not connected
0V (ground)
Ext. unit 1
Ext. unit 2
Out 4
DC output
Not connected
+9V input
Not connected
Step pulse
Pause
8 7 6 5 4 3 2 1
13 12 11 10 9 14 15
/36. 393 Handbook