Agilent Technologies 85330A service manual Counter Pulse Delay Test

Counter Pulse Delay Test

Performance Verification

Verifying the Multiple Channel Controller

The following test determines if the on-board counter is operating correctly.

1.Connect BNC cables between the SRC1 TRIG, RCVR READY connectors and the oscilloscope as shown in Figure 2-3 on page 2-10.

2.On the oscilloscope press:

[RECALL] [1]

[TRIG] {Source 2} {Adjust: 1.5v} { } (+ Edge}

[TIMEBASE] {1 us/Div} {Delay: 4 us} {Ref: Centr}

[SAVE] [2]

3. Press the following on the multiple channel controller:

[Clear Instr] [Select Instr] {85330A} {RESET} [More] {TEST} {COUNTER}

4.Press the following on the multiple channel controller:

[4] [Return]

5.The negative edge of the displayed pulse should be 4 ±1 microseconds.

To use the scope measurement feature, press: [∆ t ∆ v] {∆ t Marker: ON}. Rotate the front panel knob until the vertical marker line intersects the negative edge of the pulse. Note that the Start Marker reading will be the pulse delay. See Figure 2-4 on page 2-10for more information.

6.On the oscilloscope press:

[TIME BASE] {1 us/Div} {Delay: 1000 us} [CLEAR DISPLAY]

7.Press the following on the multiple channel controller:

[1] [0] [0] [0] [Return]

8.The negative edge of the displayed pulse should be 1,000 ± 1 microseconds.

To use the scope measurement feature, press: [∆ t ∆ v] {∆ t Marker: ON}. Rotate the front panel knob until the vertical marker line intersects the negative edge of the pulse. Note that the Start Marker reading will be the pulse delay. See Figure 2-4for more information.

9.On the oscilloscope press:

[TIME BASE] {2 us/Div} {Delay: 15 ms} [CLEAR DISPLAY]

10.Press the following on the multiple channel controller:

[1] [5] [0] [0] [0] [Return]

11.The negative edge of the displayed pulse should be 15 ± 0.001 milliseconds.

To use the scope measurement feature, press: [∆ t ∆ v] {∆ t Marker: ON}. Rotate the front panel knob until the vertical marker line intersects the

85330A Multiple Channel Controller 2-9