Curtis Computer 833 - Manual (Page 12)

Table 1. Hour Meter Control Lines & Impedance
Specifications
Model Low Voltage High Voltage Min. Impedance
Maximum Minimum HRM+ HRM-
24 VDC 5.0 VDC 15.0 VDC 90 k Ω 30 k Ω
Table 2. Hour Meter Control Logic
Key HRM HRM HRM Hour Icon
switch (+) (+) (+) meter
Off x x x Display only Steady
On V
H x x On Flashing
On x V
H x On Flashing
On x
x
V
H On Flashing
On V
L
V
L
V
L Display Flashing
or open or open or open only
!
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