Test; Introduction; Rear Panel Switches; Basic Operating Test - HP 7475A Service Manual

Model 7475A
Section II
SECTION II
OPERATING AND PERFORMANCE TEST
2-1. INTRODUCTION
2-2. The following information is provided to determine
whether the plotter is operating properly. If operation is
not correct, refer to Section VI of this manual for service
information.
2-3.
REAR PANEL SWITCHES (Option 001)
2-4. A3/ A4. This switch chooses between Bl A3 size
paper and A/ A4 size paper. The switch is used to set the
default paper size only at power up. Subsequent paper
size changes can be made from the front panel.
2-5. BAUD RATE. Table 2-1 shows the switch settings
required. Disregard any markings on the switch itself
and use the 1 and 0 markings on the rear panel to
determine baud rate.
2-6. PARITY. Two rear panel switches are used for
parity selection. When the SI/PARITY switch is set to 1
(ON), the S2/PARITY switch selects odd or even parity.
2-7. MET/US. This switch is used to program the
plotting area for four paper sizes:
Paper Switch Maximum
Size Position .
Plotting Area
B/A3
MET
275
x
402 mm
us
10.2
x
16.3 in.
A/A4
MET
192
x
275 mm
us
7.5
x
10.2 in.
2-8. D/Y. When the EAVESDROP switch is in the Y
position, received data is retransmitted and the plotter
does not respond unless it is given a "Plotter On"
instruction. When this switch is in the D position, the
plotter responds to all recognized commands.
2-9. REAR PANEL SWITCHES (Option 002)
2-10. ADDRESS. The plotter's HP-IB address is set by
five of the seven switches on the rear panel. Disregard
any markings on the switch itself and use the 1 and 0
labels on the rear panel to determine the address in
binary coded decimal.
2-11. A3/ A4. This switch chooses between Bl A3 size
paper and A/ A4 size paper. The switch is used to set the
default paper size only at power up. Subsequent paper
size changes can be made from the front panel.
2-12. MET /US. This switch is used to program the
plotting area for four paper sizes:
Paper
Switch Maximum
Size
Position Plotting Area
BIA3 MET
275
x
402 mm
us
10.2
X
16.3 in.
A/A4 MET
192
X
275 mm
us
7.5
x
10.2
2-13. BASIC OPERATING TEST
2'14. The front panel controls can be used to test basic
operation of the plotter; however, this procedure does not
test the 110 circuits.
a. Make sure six pens are installed in pen carousel.
Table 2-1. Baud Rate Selection
ONE STOP BIT
TWO STOP BITS
REAR PANEL SWITCHES BAUD REAR PANEL SWITCHES
B4 B3 B2 Bl RATE
B4 B3 B2 Bl
-
- - -
External 0
0 0 0
-
- - -
75
0 0 0 1
-
-
-
-
110 0 0 1 0
0 0
1
1
150
-
-
- -
0
1 0
0
200
-
-
-
-
0 1 0 1 300 1 0 1
1
0
1 1
0
600 1 1 0 0
0
1 1
1
1200 1 1 0 1
1
0
0
0
2400 1 1 1 0
1 0 0 1 4800 1 1 1 1
1 0 1 0 9600 -
-
- -
1
=
Switch Open; 0
=
Switch Closed
2-1