HP 3457A Service Manual page 28

General Information
Table 1-1. Specifications
FREQUENCY AND PERIOD ( C o n t ' d )
SENSITIVITY:
10mV rms o r 100uA rms s i n e - w a v e
TRIGGERING:
T r i g g e r s a n d c o u n t s o n z e r o c r o s s i n g s .
MEASUREMENT ACCURACY:
? ( %
o f r e a d i n g )
FREQUENCY
I
MAXIMUM READING RATE:
% OF
READ 1 N G
I::
2
r e a d i n g s / s e c o n d ( I n t e g r a t i o n t i m e o f
1
PLC, f a s t s e t t l i n g t i m e , d e l a y z e r o a n d m a t h OFF,
a n d f i x e d r a n g e )
-- -- -
PLUG-IN OPTION
44491A Armature Re1 ay Mu1 ti p l e x e r Assembly
INPUT CHARACTERISTICS:
E i g h t t w o - w i r e a r m a t u r e r e l a y c h a n n e l s and
MAMMUM VOLTAGE: ( T e r m i n a l t o T e r m i n a l o r Term
t w o c u r r e n t / n c t u a t o r c h a n n e l s .
i n a l t o C h a s s i s )
250
VDC o r 250 VAC rms
MAXIMUM C U R R E N T : ( p e r c h a n n e l
1
amp DC o r AC rms
THERMAL OFFSET:
<
3
m i c r o v o l t s
RELAY L I F E :
l o 7
o p e r a t i o n s a t maximum l o a d ( 1 . 5 amps
CLOSED CHANNEL RESISTANCE: ( e n d o f r e l a y l i f e
< 2 ohms
MAXIMUM SWITCHING AND MEASUREMENT SPEED:
33
c h a n n e l s / s e c o n d
ADJACENT CHANNEL CROSSTALK: ( C h a n n e l s t e r m i n a t e d i n t o 50 ohms)
- 6 0 d b @ 100KHz