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Service
Model 35601A
K7 ... Change Attenuation2
Pressing this key enables the user to select the attenuation of the 0 or 6dB Attenuator. The
computer prompts the user to enter a number (1 or .5) that represents the ratio of the output
voltage to the input voltage of the attenuator. When CONTINUE is pressed, the state of the
attenuator is changed and the computer display is updated.
K8 ... ENTER SETTINGS (hp-9836)
Pressing this key permits the user to change the state of the relays and switches shown in
Figure 6-19 by direct entry of commands indicating the desired switch or relay state. Enter
ing the command string is described in the following section.
K9 ... SWITCH EXIT (hp-9836)
(shift) K11 ... Return to Main Program (hp-9845)
Pressing this key returns the user to the -hp- 35601A test main program. After
troubleshooting with "SWITCH", the Automatic Tests and Adjustments may be repeated
or continued after pressing this key.
6-32. Entering a Command String
To Change the state of the switches and relays shown in Figure 6-19, a command string must
be entered. A command simply consists of the switch number shown in the block diagram in
Figure 6-19 for a particular switch. The possible switch numbers are shown in Table 6-4.
When a "SWITCH" command is entered, and continue is pressed, the command is
displayed. A displayed command (with the prefix K, S, or L) indicates that the correspond
ing switch or relay is in the state opposite to that shown in the block diagrams (Figure 6-1
through 6-19). The commands that have an F prefix control the cut-off frequency of the
Switchable Lowpass Filter; for this reason, one of these commands is always displayed. To
return a switch or relay to the state shown in the block diagrams, enter the command preced
ed by a minus sign. Command strings are performed by entering multiple commands
separated by commas.
Table 6-4. "SWITCH" Commands.
Commands
K 1 , K2, K3, K4, K5, K6,
K7, K8, K9, K10, K11.
K12, K13, K14
S I , S2, S3, S4, S5, S6,
S7, S8 (only one of S5,
S6, S7, and S8 may be
1 selected)
1 FO, F 1 , F2 (one of
I these will always be
I displayed)
I LO, L1, L2, L3, L4, L5,
L6, L7, L8, L9, L10, L11,
L 1 2 , L 1 3 , L 1 4 , L 1 5 , L 1 6 ,
I L17, L18, L19, L20, L21
Function
I
Relays on the
I
A4 board
I
Switches on the
A5 board
Switchable Lowpass Filter
on the A3 board
Switches on the A3, A6,
and A7 boards
6-48
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