Philips PM2519 - Page 44

3-2
3.1.
GENERAL
ATTENTION: Before checking and adjusting, the PRESET values, which are stored in RAM must be reset.
To do this, shortcircuit Tp1001 and Tp1002, for one second in position}! KE < 102.
If the instrument is closed, shortcircuit spots via hole 2 and 5 in positiondt KE < 100.
The adjusting procedure consists of two parts: A and B. The first part (A) and the second part (B) of the
procedure only should be used when the OO 0063 or the OO 0068 have been replaced. In all other cases it is
possible to start direct with part B. If a calibration cannot be made it is recommended to start first with
part A.
If the software there are subroutines which are used to adjust the PM 2519. To call these subroutines short-
circuit TP1001 and TP1002 for one second in position Hz, if the instrument is opened.
tf only calibration part B must be done, it is not necessary to open the instrument. In the bottom there are
8 holes. Short circuiting the spots via hole 2 and 5, will bring up the calibration mode. This must be done
in the position Hz.
8
8
8
°
(o] F1300@[(]]
HOLE 5
HOLE 2
ST4415
840713
Fig. 3.1, Bottom cover
NOTE: For instruments with a serial no. lower than DYO1 3611, resetting the PRESET values and
entering the calibration mode is done via hole 2 and 4 (teflon holes).
When the calibration mode is entered the instrument will respond with 1000.c kHz. The other calibration
routines can be selected with the function switch and the up/down buttons (see calibration procedure). ae
To calibrate the range, supply the displayed signal to the input terminals, and push the ZERO SET ON/OFF
knob. The PM 2519 will respond with e.g. 100.0r mV. If the supplied signal is not the right one the
PM 2519 will respond with 100.0F mV or if the input signal is unstable the PM 2519 responds with
100.0u mV.
If a range is selected which cannot be calibrated while pushing the ZERO SET ON/OFF button the PM 2519
will respond with Err.
After using these subroutines the PM 2519 should be reset (switch the PM 2519 off and on).