Table 3-9. Control Board Test Connector, A2J7

PIN NO.

 

 

SIGNAL NAME

Vdc

WAVEFORM/CONDITIONS

SOURCE

Digital-Circuits Bias & Reference Voltages

 

 

24

+5V

5.0

 

A2Q9 (emitter)

22

+ 20V(5V UNREG)

20.0

with 120Hz & 45KHz ripple

AlCR6, AlCR7

14

2.5V ref

2.50

 

A2U7 (OUT)

6

0.5V ref

0.50

 

A2R24,A2R84, A2R85

 

 

 

 

 

 

 

 

 

 

 

 

 

Analog-Circuits Bias Voltages

 

 

 

2

+ 15V

15.0

 

A2U11 (OUT)

21

-15V

-15.0

 

A2U12 (OUT )

 

 

 

 

 

 

 

 

 

 

 

 

 

Status Signals

 

 

 

17

 

 

 

 

 

 

 

 

 

 

TTL Lo

if in CV operation

A2Q2 (collector)

 

CV

16

 

 

 

 

 

 

 

 

 

TTL Lo

if in CC operation

A2Q1 (collector)

 

CC

13

 

 

 

 

 

 

 

 

 

TTL Hi

if not OVP shutdown

A2U15-13

 

OV

11

 

 

 

 

 

 

 

 

TTL Hi

if ac mains okay

A2U15-10

 

AC FAULT

12

 

 

 

 

 

 

 

 

TTL Hi

if not overtemp shutdown

A4TS1,A5TS1

 

OT

 

 

 

 

 

 

 

 

 

Control Signals

 

 

 

25

PWM OFF

 

10∝s TTL pulses, 20KHz

A2U16-5

26

PWM ON

 

1.7∝s TTL pulses, 20KHz

A2U15-1

18

Ip MONITOR

 

1V pk, ½ sawtooth, 20KHz

A2CR27 (cathode)

 

 

 

 

 

 

 

 

 

 

 

 

(at full power only)

 

8

 

 

 

 

 

 

TTL Hi

if not remotely inhibited

A2U18-9

INHIBIT

15

 

 

 

 

 

1.2-3.0

while not down programming

A2CR17, CR31(anode)

 

DOWN PROGRAM

7

OVP PROGRAM

1/100 OVP (6030A)

e.g.: 2 Vdc if OVP set to full

 

 

 

 

 

 

 

 

 

 

 

 

1/10 OVP (6031A)

voltage output

A3R72 (wiper)

 

 

 

 

 

 

 

 

 

 

 

1/30 OVP (6032A)

 

 

 

 

 

 

 

 

 

 

 

 

 

1/250 OVP (6035A)

 

 

5

 

 

 

 

 

+5V

inverted OV reset line

A8U4-35

 

OV CLEAR

19

 

 

 

+5V

if +5V bias OK

A2Q11-4

PCLR

Commons & Current-Monitor

 

 

 

4

COMMON

0.0

return for all bias voltages,

 

 

 

 

 

 

 

 

 

 

 

 

 

status and control signals

 

9

COMMON

0.0

return for 2.5V and 0.5V ref

 

10

I-TEST

≈0.013*I0UT(6030A/35A).

inboard-side monitoring res

A1R11,A1T2

 

 

 

 

 

 

 

 

 

 

 

≈0.0017* IOUT (6031A)

 

(AlR13 (6032A))

 

 

 

 

 

 

 

 

 

 

 

≈0.0037* IOUT (6032A)

 

 

3

V-MON-BUF

V-OUT/4 (6031A)

buffered V-MON for readback

A8U25-6

 

 

 

 

 

 

 

 

 

 

 

V-OUT/12 (6032A)

 

 

 

 

 

 

 

 

 

 

 

 

 

V-OUT/40 (6030A)

 

 

20

Ip-SET

V-OUT/100 (6035A)

 

A2R25 wiper

≈0.9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

55

Page 53
Image 53
Agilent Technologies 6031A, 6035A, 6032A, 6030A service manual Control Board Test Connector, A2J7, Vdc