Service manual

22
Table 3-3. Test Points (continued)
Test Point
Number
Signal Measurement and Conditions
U308-1
CV PROG In VOLT MODE, + 10V with full rated voltage programmed; +0.5V
with 3 volts programmed.
In CURR MODE or RES MODE (middle and high ohm ranges), + 13V.
In RES MODE (low ohm range), < 1V.
U308-7
CC PROG In CURR MODE, + 10V with full rated current programmed.
In VOLT MODE, RES MODE (low ohm range), or with INPUT
OFF: - 0.5V.
In RES MODE (middle and high ohm ranges), < 1V.
U351-10
TRANS_EN High level with transient operation programmed on (TRAN ON).
Low level with transient operation programmed off (TRAN OFF).
U324-1
SLEW In CURR MODE, -10V with full rated current programmed; 0V with
zero current programmed.
In VOLT MODE, -10V with full rated voltage programmed; 0V with
zero voltage programmed.
U309-16
DAC_REF Low level in CURR or VOLT MODE. High level in RES MODE (any
range).
U309-8
CR Low level in RES MODE (low ohm range). High level in CURR,
VOLT, or RES (middle or high ohm range) MODE.
U309-1
CG Low level in RES MODE (middle or high ohm range). High level in
CURR, VOLT, or RES (low ohm range) MODE.
TB301-9
PORT High level with PORT0 ON programmed. Low level with PROT0 OFF
programmed.
U329-4
-10 V Ref -10V (9.95 to 10.05V).
U323-1
+ 12V Ref + 12V (11.28 to 11.44V).
POWER BOARD
U5-5
(60501B/02B/03B)
U12-5
60504B/07B)
PROG Under normal operating conditions (input is regulated) measurement
should be:
-0.22 V X Iin (60501B)
-0.11V X Iin (60502B/07B)
-0.66V X Iin (60503B)
-0.055V X Iin (60504B)
With input unregulated or disconnected, the measurement will be:
≈-.2V in CURR Mode
≈ +0.2V in VOLT or RES MODE