Valleylab Force 2-2 PCH

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Typical Output Waveforms

6-12 Force 2 Service Manual

Figure 6-5.

Coag 300 Ω Load

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Conventions Used in this Guide3
Valleylab Service Centers4
Table of Contents5
List of Figures8
Section 1. Service Warnings and Cautions11
Section 2. Unpacking and Installation13
Unpacking the Force 2 Generator13
Responsibility of the Manufacturer13
Preparing the Generator for Use14
Power Requirements14
Check the Power Connector14
Ensure Proper Grounding15
Perform a System Check15
Section 3. Description of Controls, Indicators, and Receptacles17
Controls19
Indicators20
Alarms21
Receptacles21
Rear Panel Functions22
Section 4. Technical Specifications23
Standard Conditions of Measurement23
Operating Parameters23
Storage and Shipping23
Output Waveform24
PCH Generator Output Characteristics24
Output Configuration24
Input Power Source25
Force 2-2 PCH Generator25
Force 2-8 PCH Generator25
Line Regulation25
High Frequency Risk Parameters26
Low Frequency Leakage (50-60 Hz)26
Force 2-2 PCH Generator26
Force 2-8 PCH Generator (Per VDE 0750 (IEC601-1), Section 19 for Class 1 Equipment)26
REM Contact Quality Monitor27
Audio Volume27
Approximate Weight27
Size27
Classification27
Type CF Equipment Per IEC 601-127
Drip Proof Per IEC 601-127
Output Power Vs. Impedance Graphs28
Section 5. Circuit Descriptions33
Bipolar Display33
Monopolar Control/Display33
Mode Indicators34
REM and RMOTE Indicators35
RF Indicators35
External Memory36
Interface37
Power Supply38
RF Output39
Section 6. Maintenance Procedures41
Routine Maintenance and Inspections41
Cleaning Instructions41
General Testing Information42
Recommended Test Equipment43
Power up Self-Test43
Calibration44
Calibration Procedure44
REM Test Procedure47
Line Frequency (50-60 Hz) Current Leakage Test Procedure48
Bipolar and Monopolar Output RF Leakage Test Procedures49
Typical Output Waveforms50
TT-On Waveforms at TP12 on PSRF Board53
RF Drive Waveforms at TP7-10 on PSRF Board53
Clamp Waveform at TP11 on PSRF Board54
Components Replacement Guidelines55
Section 7. Manufacturer Service57
Returning the Equipment for Service57
Returning the Force 2 Generator58
Returning Circuit Boards and Other Subassemblies58
Section 8. Service Parts List59
Ordering Replacement Parts59
Monopolar Control/Display Board60
Bipolar Display Board62
Interface Board63
Power Supply RF Board66
Heatsink Assembly71
RF out71
Hvdc71
Clamp71
Generator Base Assembly72

Valleylab Force 2-2 PCH - Page 52

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