Philips PM 6611 - Page 21

Mains
Q 230 V
115 V
Power
Transformer
} 50... 400 Hz
Ext. Batt.
D
Internal
Battery
Int. Batt. Off PM 9673
Mains/Ext. Batt
Stand By Power
to PM 9679, PM9690
Stand By Lomp
*120V +I2V *5V -5V -50V
x20
|
| GRIO1-106 T5101,102
A |
Att </00kHz
~IA
274
| UNIT U2 HIGH FREQ. PRESCALER
^ Input B Pre-
| Attenuator Attenuator
MY Att. PIN PIN
648 Att. Att.
Pres
Detecto
Ref. Level
LEYES V Channel B
Selector
Main
Gate
0
KHz}
[sensitivity]
[77]
[zz]
[xr
I
mA.
Display Clock
& Scanner
Address
Counter
Tof 10
Decoder
|
|
LOCMOS | LOCMOS |
Quad |Quad | Battery ¿ow
Decade | Decade | 7
|
|
7-5egment
Cathode & DP
Decoder -Driver
Decade
8 Latches
4 BU 106
MUX
l
s
PË Reset Transfer |
--- — — — — — — —'n — — — —
¿IAS A 4 Gate/Stand By
Stand By
7 p
z
/
ex
΄
I CA
Waveform]
Check &
Channel
Selector
10 MHz
Check
Signal
| ΄
I
I
I
I
!
Transfer
To
Time Base Div.
Gate
MV
Main Display
Gate EN ΞΕ f & Display
B n
Prescaled
Signal *)
Channel
Select MUX
Oven
Stand
Ext.
/Int.
ji
<
or
By
Power
SKI3
;
782
der G
Enable
Decade
Time Base
& Multiplier Control
k d LOCMOS | LOCM
Quad Quad
f m Deca
OS
Osc. MUX
10 MHz Ze
D 1
Period/
Period
l Selection |
Input C
Zx
£
Std:
10
MHz
Function
&
Ratio
Out
Switch
Input
...
PM 6614 = 8 πως
ΡΜ 66/5 = 16 Divider *)
Block diagram