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Page 10
Series 90L4/Series 90H8 Scanner Control
The Scanner Control Boards in the Series 90L4 and Series 90H8 are designed to communicate
through a serial port (COM) instead of a Cablescan I/O board. Since a PC serial port cannot be
daisy chained, the Series 90L4 and Series 90H8 are limited to one cabinet (512 test points). For
Series 90L4 and Series 90H8, the other external signals, which include the footswitch and wrist
strap connections, and the remote signals, are available on one of the PC's parallel (LPT) ports,
controlled by Series 90 software. Refer to the section on Remote Signals for pin assignments.
Series 90L4/H8 Connection Procedure
Arrange the Series 90L4/90H8 alongside your PC. Connect the power cords as shown in Figure
9, and as described below:
1. Verify power switch on rear panel is in OFF position.
2. Connect power cord (part number 9200016) from power connector (male) on rear
panel to an AC power source (100 to 220V~).
3. Connect PC serial port to and tester serial port with 9-conductor cable (9100069).
4. Connect PC to appropriate power source in accordance with PC instruction manual.
Grounding the Unit
The Series 90L4/90H8 is shipped with a three-wire grounded cable.
connected to a three-wire (grounded) receptacle, it connects the chassis of the unit to ground.
SERIES 90L4
PIN LAYOUT
1
2 129
257
384
63
64
192
320
J1
J3
J5
J2
J4
J6
65
193
321
449
128
256
384
.100 PIN SPACING
1.
SERIES 90H4
PIN LAYOUT
1
2
65
129
193
31
448
32
96
160
224
J7
J1
J3
J5
J7
J8
J2
J4
J6
J8
33
97
161
225
64
128
192
256
512
.200 PIN SPACING - CTR. ROW
& EVERY OTHER PIN BLANK
LAMP
POWER
PROBE
LAMP
3.
SERIAL
FUSE
PORT
ON
OFF
2.
Figure 9. Series 90L4/H8 Cable Connections
4.
Series 90 Setup Manual
When the cable is
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