Calibration; Calibration; Power Supply Calibration; Calibration Voltage Ranges - Data I/O 298 Manual

4.3 CALIBRATION
WARNING
To avoid electric shock always test
for voltage before touching when
working inside the equipment.
Calibration of the 298 consists of checking and adjusting
the power supplies. This will normally be performed as part
of the calibration of a programming Pak (or module), as
proper operation of the module depends on the
programmer's power supplies.
This manual explains how to calibrate the programmer's
power supplies. The programming Pak's (or module's)
instruction manual provides the procedures for calibrating
the Pak (or module), and explains how to carry out these
instructions on the 298 by providing specific key sequences
and steps for entering and executing the calibration mode.
Figure 4-1 demonstrates the calibration procedure.
POWER SUPPLY
MEASUREMENT
DC CALIBRATION
SEE
SUBSECTION
4.3.1
SEE
PROGRAMMING
MODULE MANUAL
PERFORMANCE CHECK SEE PROGRAMMING
!OPTIONAL) t - - - - - - - - - · I MODULE MANUAL
WAVEFORM
OBSERVATION
SEE
PROGRAMMING
MODULE MANUAL
Figure 4-1. Calibration
4.3.1 POWER SUPPLY CALIBRATION
Proper operation of your programming Pak depends on the
programmer's power supplies being properly adjusted.
Therefore, the programmer power supplies must be
calibrated first.
Table 4-1 lists the voltage ranges for the power supplies.
Test points for these supplies are
lo~ated
both on the
controller board (see figure 4-2) and on the calibration
extender. The power supply voltages can be measured in
either location.
Table 4-1. Calibration Voltage Ranges
POWER VOLTAGE RANGE TEST ADJUST
SUPPLY Min. Norn. Max. POINT
+5
v
5.00 5.11 5.15 TP1 R42
+24
v
Z3.5 24.0
24.5
**
RZ3
+48
v
49.5 49.7 49.8 **
R16
+PROG V*
4.80 4.90 5.11 Below J7
*
-9
v
-9.20 -9.00 -8.80 ** R26
-5
v
-5.25 -5.00 -4.75 ** Non-
adjustable
+12
v
11.4 12.0
12.6 To right Non-
of U39
adjustable
* If adjustment is required, ground the right side of R59 on
the Controller. Use R55 to adjust PROG V to + 21.00
±
0.20
v.
** These test points are printed circuit feed-throughs to the
left of J7.
Required Equipment
The following equipment is required for calibrating the
29B's power supplies.
• Digital Voltmeter
• Non-conductive alignment tool, or 1 /8" flat-blade
screwdriver
• Jumper wire approximately 12 inches long
• IC removal tool or small screwdriver
Set-Up
The following procedures describe calibration set-up. Test
points are shown in figure 4-2.
1. Turn the programmer power off and remove the power
cord.
2. Remove the programming Pak {or module) from the
programmer.
4-2
10-990-0013