Installation BDS 3960
Teledyne Analytical Instruments 34
3.3.2.1 PRIMARY INPUT POWER
The power cord receptacle and fuse block are located in the same
assembly. Insert the power cord into the power cord receptacle.
CAUTION: POWER IS APPLIED TO THE INSTRUMENT'S
CIRCUITRY AS LONG AS THE INSTRUMENT IS
CONNECTED TO THE POWER SOURCE.
The power supply requires 100–120 VAC, 50/60 Hz power source.
Fuse Installation: The fuse block, at the right of the power cord
receptacle, accepts US or European size fuses. A jumper replaces the
fuse in whichever fuse receptacle is not used. Fuses may not be installed
at the factory. Be sure to install the proper fuse as part of installation.
(See Fuse Replacement in Chapter 5, Maintenance.)
3.3.2.2 50-PIN EQUIPMENT INTERFACE CONNECTOR
Figure 3-4 shows the pin layout of the Equipment Interface
connector. The arrangement is shown as seen when the viewer faces the
rear panel of the analyzer. The pin numbers for each input/output
function are given where each function is described in the paragraphs
below.
Figure 3-4: Equipment Interface Connector Pin Arrangement
Analog Outputs: There are four DC output signal pins—two pins per
output. For polarity, see Table 3-1. The outputs are:
0–1 VDC % of Range: Voltage rises linearly with increasing
oxygen, from 0 V at 0 ppm to 1 V at
full scale ppm. (Full scale = 100% of
programmable range.)
0–1 VDC Range ID: 0.25 V = Low Range, 0.5 V = Medium
Range, 0.75 V = High Range, 1 V =
100ppm.