Performance Tests
CSA 803C Service Manual 4Ć41
This procedure verifies the correct operation and accuracy of the
CSA 803A's Prescalertrigger system.
Specifications
The specifications for Prescaler triggering are as follows:
800 mVpĆp at 2 GHz
600 mVpĆp at 3 GHz
600 mVpĆp at 10 GHz

Setup to Check Prescaler Triggering

CSA 803C
HighFrequency Generator
Output
PowerMeter
PicosecondPulse
Labs5520A
10XPickĆoff
PRESCALERTRIGGER Input
CH1
Power
Reference
X1
Sensor
Input
Input
10GHz Power
MeterSensor
SDĆ22,SD Ć24, or SDĆ26
B10

Procedure to Check Prescaler Triggering

ăStep 1:ăInstall the SDĆ24 Sampling Head into the CH 1/CH 2 slot of the
mainframe. Set the ON/STANDBYswitch to ON and let the instrument
warm up for approximately 15 minutes. Initialize the mainframe settings,
then perform the following settings and steps.
ăStep 2:ăConnectthe High Frequency Generator to the Picosecond
Pulse Labs (PSPL) 10X PickĆoffIN. Connect the PSPL 10 output to
Channel 1 of the Sampling Head.
Prescaler Triggering