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The EXIT and ENTER keys serve to execute specific commands that may be
indicated on the screen, and the NEXT key generally serves to scroll the displayed
information, e.g. to review the operating parameters that have been programmed,
display maximum/STEL values, diagnostic values, etc.
If an incorrect command is keyed (e.g. ENTER when the personalDataRAM
displays real-time concentration) a beep is heard to alert the user.
The two-line, 16-character per line LCD indicates either measured values of
concentration (instantaneous and time averaged on the same screen), elapsed run
time, maximum and STEL (short term excursion limit) values, operating and logging
parameters, diagnostics, or other messages.
The acoustic alarm transducer is located directly behind the center of the Thermo
Scientific (formerly Thermo Electron Corporation) logo on the front panel.
5.2
Bottom Base
Refer to Figures 3 (for model pDR-1000AN) or 4 (for model pDR-1200). The base
of the personalDataRAM contains the following: a) internal battery compartment
cover, b) external DC power input receptacle, and c) threaded bushing for the
attachment of optional battery pack, tripod, or other mounting/support hardware.
Only the internal battery compartment cover should be opened by the user, for
removal and replacement of the on-board 9V battery. Removal of the base plate
could result in voiding of instrument warranty.
5.3
Right Side Panel
Refer to Figures 5 (for model pDR-1000AN) or 6 (for model pDR-1200) which
shows the manner of attachment of the belt clip assembly (belt clip should be
attached only if required by the user). The right side panel (as viewed from front
panel) contains the RJ-12 6-contact modular jack connector receptacle for digital
(RS-232) communications and analog signal output. This connector also provides
the alarm output control for a remote/auxiliary alarm signal. The contacts (from top
to bottom) are:
1:
4 – 20 mA analog output (positive)
2:
Alarm output
3:
Digital data transmission
4:
Digital input
5:
Common ground (signal returns)
6:
0 to 5 V analog output (positive)
The digital communications cable provided as a standard accessory is to be inserted
into this receptacle for interconnection to a computer (for data downloading or to
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