Detection Systems DS7092 Spécifications télécharger pdf (Page 136)

(3)

(4)

(5)

(6)

(7)

Figure 21. Fabrication of special test cables.

Use the Transistor Power Supply

721A and apply +5 volts dc to the

test probe.

Measure the voltage at connector

P7801-H with the ME-26B/U; ad-

just potentiometer R7803 for ap-

proximately +0.5 volt dc.

Measure the voltage of the emitter

of transistor Q7801 (ungrounded

side of potentiometer R7801) with

the ME-26B/U; adjust potentiom-

eter R7801 for approximately +1

volt dc .

Measure the 721A output with the

TS443/U; increase the output to

13.0 volts dc.

Measure voltage at the emitter of

transistor Q7801 with the ME-

(8)

(9)

(10)

26B/U; adjust potentiometer R7801

in the increasing voltage direction

until a sharp drop in voltages indi-

cates transistor Q7801 has trig-

gered. This should occur at

approximately +9.5 volts dc.

Reduce the output of the 721A to

zero, then carefully increase it to

10.5 volts dc as indicated by the

TS-443/U.

Measure the dc voltage at connec-

tor P7801-H with the ME-26B/U;

carefully a d just potentiometer

R7803 until a sudden drop in the

measured

voltage

indicates

GREEN indicator DS7902 has

switched on.

Reduce the output of the 721A to

1 2 ... 131 132 133 134 135 136 137 138 139 140 141 ... 180 181

Commentaires sur ces manuels

Pas de commentaire

Detection Systems DS7092 Spécifications Page 136

Commentaires sur ces manuels

Produits connexes et manuels pour Systèmes de contrôle d'accès de sécurité Detection Systems DS7092