Output Amplifier Guide - Wavetek 193 Instruction Manual

6-17
Test Point
Desired Results
Base
+
11.7 ± 1.2 Vdc
030 Emitter
+
11 ± 1.1 Vdc
Collector
+
19 ± 1.9 Vdc
032 Collector
+
22.8 ± 2.3 Vdc
Base
-12 ± 1.2 Vdc
031
Emitter
-11.3 ± 1.1 Vdc
Collector
-19 ± 1.9 Vdc
Table 6·15. Output Amplifier Checks
DC
Off
FUNCTION
DC OFFSET
Settings Controls
6.4.15 Output Amplifier Guide
Set the controls as shown; then take the waveform
measurements. Refer to table 6-15.
Figure 6·21. Preamplifier Waveforms
__ -1.6V
029
EMITTER
-_ -0.9V
____ +1.6V
029
BASE
____ +2.3V
2.0
1K
Off
CONT
Square
FREO/START FREO
FREO MULT
SYM
MODE
FUNCTION
Settings
Controls
Function Problems:
Set the controls as shown; then
take the waveform measurements. Refer to figure
6-21.
Figure 6·19. Square Shaper Waveforms
__ -0.5V
__ -0.3V
____ +1.2V
__ -1.2V
__ -2.8V
__ -2.2V
____ -1.8V
____ -2.2V
__ -1.0V
__ -0.8V
____ +1.0V
SQUARE
-1.5 ± .15 Vdc 024
EMITTER
0.0 ± 10 mVdc
CR23 ANODE
-1.2 ± 12Vdc 025
EMITTER
-1.2 ± 12 Vdc
023
COLLECTOR
- 0.8 ± .08 Vdc
023
BASE
-1.8
±
.18 Vdc
022
BASE
U4
PIN
12
___ -1.0V
__ -0.8V
013 EMITTER
SINEITRIANGLE
_____________ +1.0V